Fecal left in a toilet for the purpose of grossing out the next user, generally in a public facility or done due to lack of home training.
"Nothing worse than walking into the bathroom and seeing toilet chum!"
2.Shark bait composed of unwanted or useless fish parts. chummed; chummer; chumming; ect.
3.SLANG.Semen or sebum see also "smegma".
adj."They are acting chummy"
2."I saw a chummer chumming with chum, he chummed all day"
3."Suck my chum!"
"Goddamn my chum is rashy... I hope I didn't catch anything."
"That fudgepacker tried to grab my chum in the showers after the game! What an asshole!"