Butt creases and the occasional box gap. The Gluteal Sulcus (also known as “the butt crease”) is the sexy groove between the buttocks and the posterior upper leg.Tumblr (3.0; @glutealsulcus)http://glutealsulcus.tumblr.com/<img src="http://25.media.tumblr.com/a42fe0b03aad8bacbec1dae3ed7f6e6e/tumblr_mlxythMUkf1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/51308809889http://glutealsulcus.tumblr.com/post/51308809889Sat, 25 May 2013 12:00:53 -0400round buttbig buttnice assbutt crease<img src="http://24.media.tumblr.com/13c0f3f739e62385c09cffabebfc11f8/tumblr_mlxyt0FwEc1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/51230415554http://glutealsulcus.tumblr.com/post/51230415554Fri, 24 May 2013 12:00:47 -0400box gapboxgap<img src="http://24.media.tumblr.com/95f8bc05443c030c085ed21df95c4c30/tumblr_mlxysgLJv01qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/51153448387http://glutealsulcus.tumblr.com/post/51153448387Thu, 23 May 2013 12:00:47 -0400thigh gap<img src="http://25.media.tumblr.com/18d5e1d9b3a349c2a7735ab6f4b2e2c9/tumblr_mlxys7usOf1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/51075142509http://glutealsulcus.tumblr.com/post/51075142509Wed, 22 May 2013 12:00:35 -0400box gapround ass<img src="http://24.media.tumblr.com/bf210f22c6514d5bfedcdf1d72bb331d/tumblr_mlxyrvjJwh1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50994719372http://glutealsulcus.tumblr.com/post/50994719372Tue, 21 May 2013 12:00:46 -0400boxgap<img src="http://24.media.tumblr.com/b5279d06361616bfbdea5ba9e7e24b41/tumblr_mlxyroOHGC1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50912867850http://glutealsulcus.tumblr.com/post/50912867850Mon, 20 May 2013 12:00:57 -0400butt crease<img src="http://25.media.tumblr.com/37a5ac5759bb9369197c5fe7781f4beb/tumblr_mlxxgl18rW1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50826887278http://glutealsulcus.tumblr.com/post/50826887278Sun, 19 May 2013 12:00:37 -0400butt crease<img src="http://25.media.tumblr.com/4ab78665ddbf099903affb4a763d45cf/tumblr_mlxxep9O6N1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50735625474http://glutealsulcus.tumblr.com/post/50735625474Sat, 18 May 2013 12:00:44 -0400butt crease<img src="http://25.media.tumblr.com/fdd335fdf751bbd2125bd0e1b59c7383/tumblr_mlxxehge9Z1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50657425029http://glutealsulcus.tumblr.com/post/50657425029Fri, 17 May 2013 12:00:37 -0400gluteal sulcusbutt creaseassshotbox gap<img src="http://25.media.tumblr.com/bf004dc2144c352f2899f70ec8efe505/tumblr_mlxxds2kpQ1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50582023735http://glutealsulcus.tumblr.com/post/50582023735Thu, 16 May 2013 12:00:54 -0400gluteal foldbutt creasebox gapboxgap<img src="http://25.media.tumblr.com/37fefd9c1c8aeecb1ae57238653b489f/tumblr_mlxxamY5aB1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50501336356http://glutealsulcus.tumblr.com/post/50501336356Wed, 15 May 2013 12:00:35 -0400box gapboxgap<img src="http://25.media.tumblr.com/c9b543d366077f8c01d2358368c0a582/tumblr_mlxveiLkMk1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50425135085http://glutealsulcus.tumblr.com/post/50425135085Tue, 14 May 2013 12:00:43 -0400box gapboxgapthigh<img src="http://24.media.tumblr.com/f23cdd48663590d8b360f0d6458285ae/tumblr_mlxvdsO0ke1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50347003909http://glutealsulcus.tumblr.com/post/50347003909Mon, 13 May 2013 12:00:48 -0400curvesbuttcurvesbutt crease<img src="http://24.media.tumblr.com/dab36069b1ab1f21dd41e3e15c99cfce/tumblr_mlxuv3j52n1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50264911114http://glutealsulcus.tumblr.com/post/50264911114Sun, 12 May 2013 12:00:49 -0400gluteal sulcusbutt creasegluteal fold<img src="http://25.media.tumblr.com/91ee599609f2df6a259aff72869e96fc/tumblr_mlxuuo04z61qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50173055042http://glutealsulcus.tumblr.com/post/50173055042Sat, 11 May 2013 12:00:44 -0400box gapbutt crease<img src="http://24.media.tumblr.com/87213ecc7c06d439100c067fd76a4d26/tumblr_mlxuufvwtN1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50094256262http://glutealsulcus.tumblr.com/post/50094256262Fri, 10 May 2013 12:00:29 -0400box gapboxgapthigh gap<img src="http://25.media.tumblr.com/05e1ae509d746bcf2af00a976fda293a/tumblr_mlxuu2l7n71qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/50017674601http://glutealsulcus.tumblr.com/post/50017674601Thu, 09 May 2013 12:00:37 -0400box gapboxgapthigh gap<img src="http://24.media.tumblr.com/b3beb075240d9154cc6dd182f7dabd00/tumblr_mli0akZN5H1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/49938741931http://glutealsulcus.tumblr.com/post/49938741931Wed, 08 May 2013 12:00:42 -0400gluteal foldgluteal sulcusbutt creasehorizontal butt crease<img src="http://25.media.tumblr.com/87b158298a32a3d1fb061bc8ea009e9f/tumblr_mli0a0yiMo1qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/49859916986http://glutealsulcus.tumblr.com/post/49859916986Tue, 07 May 2013 12:00:53 -0400box gap<img src="http://25.media.tumblr.com/1c28c6be46e66ae6dd9d4f51528055a6/tumblr_mli09wZ4e51qduut7o1_500.jpg"/><br/><br/>http://glutealsulcus.tumblr.com/post/49779684870http://glutealsulcus.tumblr.com/post/49779684870Mon, 06 May 2013 12:00:44 -0400box gap