Not referring to an actual shower, "Sin Shower" is actually a term of endearment used for friend rituals. Such as when everyone is drunk as fuck or some idiots decide to hot box a tent their friend's parents need to use the next day.
Person A: "Dude, what happened yesterday?"
Person B: "It was one hell of a Sin Shower"
OR
Person A: "You know... I love you guys" *cries like a little bitch*
Person B: "Friends that Sin Shower together, stay together"
Karl: "Wtf is a Sin Shower"
Person B: "STFU KARL"
Person B: "It was one hell of a Sin Shower"
OR
Person A: "You know... I love you guys" *cries like a little bitch*
Person B: "Friends that Sin Shower together, stay together"
Karl: "Wtf is a Sin Shower"
Person B: "STFU KARL"
by GROOnpa January 12, 2022
Get the Sin Showermug. 
by Ereck Flowers November 6, 2018
Get the sin graphingmug. by Tmp114 June 9, 2017
Get the Skype sinningmug. A phrase used in the Lacrosse community to describe an unacceptable combo of clothing that makes you look like an absolute rookie with no skill.
by KamikazeScotty April 15, 2022
Get the Drip Sinmug. a nigga that is weird and kind of ugly he acts nutty as hell in serious situations everyone calls him annoying
by john quake March 5, 2020
Get the sin wopmug. CORRUPT GOVERNMENT OFFICERS OR MONEY LAUNDERING BUSINESS FUGITIVES WHO FLEE TO ANOTHER TAX FREE COUNTRIES FOR ASYLUM
by ANUNE_FAT988 March 17, 2022
Get the THAK SINmug.