So not exactly a game of truth or dare but used to work in commercial diving, and one day we had a job at a sewage treatment plant, sure enough- diving in poo.


Well me (civilian) by buddy (marine) and our other coworker (Navy, former BUDS, medically discharged from being injured) were trying to figure out who was diving and who was tending.  


Me and my marine buddy definitely didn't want to dive in sewage and BUDS guy still very much had that sort of headstrong macho personality.


So we go up to him and say "Hey (guy) bet you're too much of a b***h to dive in that s**t"


To which he responded "f**k you guys I'll dive in that s**t"


And he did. Guess he showed us lol.