A figure of speech which implies that you must be thoroughly prepared before engaging in a certain event. Usually, factors such as health physical stamina and mental state fall into what could be considered a "normal" state. however when the term eat your wheaties is directed at you this is done to inform you that to compete you must supercede normal levels of functioning.
The other day some guy at the bar told me that he could beat me in darts and i told him child please u better eat your wheaties.

While on descent from a vicious posterizing dunk, blake griffin muttered eat your wheaties to the unfortunate fool below him.
by arturo f. hernandez January 20, 2011
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A big let down, something/someone continually depressing any hopeful thoughts, raining on my parade

comparable to piss in my cornflakes and who peed in your wheaties
Telling me he wasn't single just totally shat in my Wheaties.

I could tell him I sold the car already, but I'd feel guilty just shitting in his Wheaties.

You look like somebody just shit in your Wheaties, son!
by ~Ren~ August 26, 2005
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when someone comes into work looking distraught, or visibly upset, pouting, or sporting general negative vibes you say this to lighten the mood.
K: {comes in looking hungover and like she just did the walk of shame}
M: Who peed in your Wheaties??
by Kat November 26, 2004
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Used to ask why somebody is not working as hard as they should, inspired by the fact that the cereal of the name is supposed to help one build big strong muscles. Coaches especially like to ask this of their players, when their players are not practicing nearly hard enough.
"Didn't you have your Wheaties?" Coach Egan asked of David and Greg,who were horsing around during football practice. "You're supposed to be practicing and putting lots of effort into it! No horsing around!"
by JMC70 August 25, 2017
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When a guy is penetrating a women in the ass and, pulls out, jacks off and cums in the girls hair letting it dry for 3 hours.
Kate I see you're hair is a little mouse and sticky did someone give you a Dirty Wheatie?
by Oreiajad July 3, 2015
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Gets all the pussy and all the ladies love wheaty everyone likes to be around him
Wheaty gets girls
by ys han October 31, 2019
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A way people refer to a student of Wheaton College, IL
Oh, my daughter's a Wheatie. She's studying psychology and art.
by KristyCM September 14, 2023
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