A holiday celebrated every August 4, enacted by cs188 in 2016. Not much is known about it, but as the day's name suggests it likely involves stretching butts.
"WOO-HOO! It's International Buttstretcher Day, ha-ha-ha-ha! Awww yeah......awww yeah......"
Angel-wing like pattern created on sheets, furniture, or other upholstered material by sweat on the bottom partners butt during extended and/or vigorous sexual activity, especially of the cowgirl and reverse cowgirl variety.
Named for its similarity to imprinting the pattern of your moving arms and legs in snow to create a "snow angel".
Not to be confused with the sex puddle or pussy juice cocktail.
1) Get on this side tonight. I'm not sleeping in the buttsweat angel!
2) Just like a snowflake, no two buttsweat angels are exactly alike.