Taking a large dump on the chest of another during some type of sex act. Usually, performed as a ritual to celebrate the miracles of poop.
"Danny dont give me a stanley steamer tonight I want to be able to go out without having to take a shower. Plus, its not Poopmas!" - Jane W.
by John Trian July 27, 2006
A Stanley Steamer is the act in which anal sex turns into a scat-like disaster. When you pull your cock out of the ass and you get a diarrhea surprise on your chest and/or pubic region.
Craig is asking Santa Claus for new bed sheets because they are stained with shit from the Stanley Steamer his wife gave him after Thanksgiving dinner.
by James & Ann December 13, 2007
Since their motto is "Tough on dirt, gentle on carpet", the sex act entitled "the stanley steamer" is when you punch a girl in the asshole repeatedly (tough on dirt) while rubbing her pubic bush tenderly (gentle on carpet). Some consider this a contradictory act, but nothing shows your love for a woman (or man?) like a good 'ole stanley steamer.
by .sineP kucS I November 01, 2007
by Hgswells November 20, 2019
Stanley Steamers may be performed when you are at a friend's house to visit (eg. for a LAN party, etc.) but he's being a *very* shitty host, so you proceed to pull your pants and underwear down and rub your bare, nasty ass on one, very concentrated spot of his bedroom carpet. If he's being a particularly flagrant ass hole, proceeding to the rubbings of his bed sheets, pillow cases, and/or other miscellaneous personal belongings may ensue.
Kurt was completely ignoring all of his guests, so Chad proceeded to giving his carpet a thorough Stanley Steamer, though this wouldn't be the first time...
by sso33 December 20, 2008
an act where one's partner shits on their dick and then proceeds to "Stanley Steam clean" their dick off via fellatio.
by Unethical Lawz October 19, 2014
A Stanley steamer can be done one of two ways, 1) turn the AC up so it's cold in your place. Then take a shit on your victims chest. Your poo will be warm enough in the cold room to begin steaming. 2) take someone outside in the cold or camping. Con them into sleeping shirtless. Drop a hot one on their chest. Stanley would be proud.
I took Karyn camping and when she asked for the manager I took off her shirt, asked her to lie down and dropped a Stanley steamer on her chest.
by SirWonderBeard December 14, 2019