shit in your cereal

When everyone is attempting to ruin your day before breakfast.
by Dillan Dilldrup August 01, 2017
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who shit in your cereal

something u say to someone when their in a bad mood. Kinda like saying did u wake up on the wrong side of the bed.
Gzz man, who shit in your cereal?
by bigrich September 20, 2003
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may god shit in your cereal

This is an insult used when someone is really pissing you off, but you don't have the energy nor will to smack then as hard as you possibly can. It's basically a curse, and when used against christians pretty effective.
Shithead: lolol. lykehf l.ykmu gt pnnned lyk loll wtff.
ME: May god shit in your cereal.
by xorobyngrace November 20, 2007
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who shit in your cereal

also known as "who pooped in your cereal," the word means you have a quick mood change or act angry for little to no reason. the word see's the most use in the roblox community.
A: "hey"

B: "shut the fuck up with yo ugly ass"

A: "dang who shit in your cereal?"
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