Robin's Egg 

The inside of a toilet bowl, after being subjected to a single, forceful spattering of diarrhea.

Employee1: Yo bro, if you're going to the shitter, don't use the second stall...

Employee2: Why not?

Employee1: Because I just shit a Robin's Egg up in there

Robin's Egg by The Notorious G.S.D. March 11, 2014

red robin's egg 

the act of placing one's scrotum into another's beer or other beverage without their knowledge or consent, prior to serving.

great, now the girl i red robin's egged wants to make out

red robin's egg by dbacks March 19, 2003