![1girl arm_support ass ass_support bangs black_footwear black_headwear black_skirt blush bolt_action boots cloud cloudy_sky commentary_request day dutch_angle eyebrows_visible_through_hair from_behind from_below fur_trim girls_frontline gun hair_between_eyes hat highres inu3 iron_cross jacket_on_shoulders kar98k_(girls_frontline) long_hair looking_at_viewer mauser_98 military_hat miniskirt mountain panties pantyshot peaked_cap pink_eyes rifle see-through silver_hair sitting skirt sky solo thigh_boots thighhighs thighs underwear very_long_hair weapon white_hair white_panties rating:q score:33 post #3266317](/cdn_image/preview/32/60/32604190919644d5de23605a22eacda8.jpg)
Supporting or lifting the bottom edge of the butt cheeks.
Used when something (usually panties, but also pants, shorts, bikini bottoms, hands, the edge of something, etc.) is snugly pressed against or just above the point where the thighs meet/transition into the ass. The pressure being placed on this point causes the butt to be lifted slightly and to spill out a little over the edge of the item in that place, similar to the effect a corset has on a woman's bustline.
Prime examples can be seen in post #325675, post #2194153, and post #1800402.
This tag may still be used even if only one side of the ass is being fully supported. However, the half in question should unquestionably be a prime example of ass support.
This should NOT be confused with something simply pressing against the ass as it rides low to mid-level on it (post #2112035, post #2206991, post #2193221), or pulled down just slightly past it (post #2196070, post #2192644). Something like post #2203808 would almost qualify for this tag, but the panties are just being pulled down, and as a result are not pressed tightly against the body enough to create the effect described earlier.