When you’re blowing a British guy (or perhaps multiple British men) and choke on their dick and/or cum, at which point the Man responsible for the choking can say “Cheerio” if they so choose
“Hey what happened to that girl last night? She was coughing like crazy.”
“Oh dude she was totally Choking on Cheerios in the bathroom.”
“Oh dude she was totally Choking on Cheerios in the bathroom.”
by Screw-It-I'm-Out June 18, 2021

A rare instance where you meet up with a girl and she consists of lips dryer than a Popeyes biscuit. She then proceeds to give you head as the small cracks of scab shavings fall onto the tip of your dick like Cheerio dust.
Damn bro, Nina gave me the driest fucking head I’ve ever had. Dryer than the Sahara dessert. That shit was so dry I’d go as far as to call it Cheerio Head. Her alien titties sure as hell didn’t make up for anything either.
by SkuhLover69 May 27, 2025

Slang for an ick (not liking something/ something that turns you off) - can be used as a code since many people don’t know what it means.
by lozza_26 April 20, 2021

When you put a cheerio in random places, around him, around school, around the town, or even on a person without that person noticing.
If you do this, take a picture and post it on instagram or twitter with #secretcheeriochallenge
If you do this, take a picture and post it on instagram or twitter with #secretcheeriochallenge
I decided to do the secret cheerio challenge! I put a cheerio on my friends head without her noticing #secretcheeriochallenge
by TOTofficial April 20, 2017

by archy the cockroach November 13, 2021

To ejaculate on your sex partners ass as to make the anus look like a cheerio with frosting coating it. Then you proceed to eat the "cheerio."
by diesel313 September 23, 2012

by Friend 166 January 3, 2019
