pissed into your cheerios

When somebody is in a really bad mood, somebody might have urinated into his bowl of cereal earlier.

Person 1: *rant*
Person 2: Hey, who pissed into your cheerios this morning?

by elwood_j_blues August 1, 2006

piss in your cheerios

When somebody fucking ruins your day that was going well.

Hey man I don't mean to "piss in your Cheerios" but I saw your lady blowing some guy in the parking lot at bar close last night.

by Bigbadbamf February 17, 2014

pissed in your cheerios

To give somebody bad news.

"Sorry to have pissed in your Cheerios, but that chick that just gave you a blowjob has an Adam's apple and a hard-on."

by Funk knuckle July 31, 2014