piss in my cornflakes 

A big let down; disappointment; An urban version of "Rain on my parade"

A favorite saying growing up in Michigan

Damn, I was about to bang this bitch and her parents had to come home and piss in my cornflakes!

piss in my cornflakes by J April 27, 2004

Soggy Bowl Of Cornflakes 

useless, cant do a job properly, no good to anyone.

Gary: did you sort that problem out for me.

Phil: no i got jack to do it

Gary: JACK! why did you get him to do it. you soggy bowl of cornflakes, you cant do anything right.

Soggy Bowl Of Cornflakes by Jourdy22 January 27, 2015

Shit in your cornflakes 

an exclamation of a terrible time, a horrible ordeal

Dave: Hey John, get out of here, me and and Alyssa are about to have some of that whammy-jammy

John: I'm not trying to shit in your cornflakes here, but i'm watching a movie

Shit in your cornflakes by Tee Dubbz December 16, 2008

pee in my cornflakes 

someone goes and says or does something that ruins your day

"sorry i can't go this this weekend."
"why don't you just pee in my cornflakes won't cha"

"who peed in your cornflakes this morning?"
my mom won't let me go to the concert!"

pee in my cornflakes by brodybear May 9, 2007

shat in your cornflakes 

When someone’s being a moody fucker you might use this phrase to find out why

Mia:*being a daft moody bugger*
Claudia: who’s shat in YOUR cornflakes?

shat in your cornflakes by Willne has a square head x March 23, 2019

fart on your cornflakes

Synonymous to raining on your parade.

Anna: I can't wait to see that new Mathew McConaughey, Kate Hudson movie.

Rob: I don't mean to fart on your cornflakes, but I heard its just as bad as their previous movies.

fart on your cornflakes by m.c. phatback November 30, 2009

Stepping in cornflakes 

(v) The act of ruining something, and or defying someone.

Derived from pat the baker posing as billy's father.

Andy: Mom just cut off the internet!
Rikky: Dude, she's stepping in cornflakes!!!

Stepping in cornflakes by crp930 August 4, 2009