shit in someone's Cheerios
Synonym of piss in someone's cornflakes.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“Don't let his bad mood shit in your Cheerios today.”
“I was having a great morning until my boss started complaining and totally shit in my Cheerios.”
“Even though the project was going well, the manager's sudden criticism seemed designed to shit in everyone's Cheerios.”
From the breakfast food Cheerios. The term comes from the notion that defecating in someone's Cheerios would ruin their day.
- 01
and shit
Used after one or more listed objects, attributes or processes to indicate additional others.
- 02
another nail in someone's coffin
An event that increases the likelihood of or causes further failure.
- 03
answer someone's prayers
To be or do exactly what someone has been wishing or asking for.
- 04
answer to someone's prayers
Exactly what someone has been wishing or asking for.
- 05
apple of someone's eye
The object of somebody's affections; a person (or sometimes a thing) that someone strongly prefers; a favorite, a loved one.
- 06
bane of someone's existence
Someone or something that poses a significant problem to someone.
- 07
bash someone's face in
To beat someone violently.
- 08
bash someone's head
To beat up someone violently.
Last updated August 10, 2026