why the fuck did you search cereal, like really cereal? you could have learned about disease or even about other peoples cultures and you could even learn sex ed taught through memes, but look at you looking up cereal on urban dictionary you are a mistake.
tom: hey i just searched up cereal on urban dictionary!

jerry: kill your self

tom: i am a weirdly violent cat

jerry: i am a small mouse
by boy meets COW March 1, 2021
Get the cereal mug.
1. another word for being serious.
2. that hella good food that comes in a box.
3. stamps for science class that you run off to fake that you did everything in class.
1. "Dude, I'm super cereal."
2. "What did you have for breakfast? Oh i had this one kickass cereal."
3. "Hey, did you bring my cereal?"
by altecbags April 3, 2007
Get the cereal mug.
The state of mind that surpasses ordinary seriousness and is used only in the most horrible of situations such as the attack of manbearpig or the summoning of the mighty power of excelsior.
Al Gore's cerealness about manbearpig is so large that he has the need to say "excelsior" very loudly in public places.
Al Gore is a very cereal person.
People are not taking Al Gore cerial, even though his cerialness is super duper excelsiory.
by Baklava42 January 13, 2007
Get the cerealness mug.
The word serious, shortned to cereal.
Dude, I saw Katie getting slammed by Dave in her back yard.

Dude, you cereal?
by Mattrgilberto February 3, 2008
Get the Cereal mug.
A slang version of the word "serious," usually used to inflect idiocy or ditzy-ness.
Popularized by South Park's episode featuring Al Gore.
'Man-bear-pig is real, I am super, duper cereal!'
by Stealth Walrus October 27, 2008
Get the cereal mug.
A codeword to talk about sex without saying the word when you're in a public area
I had the best cereal of my night last night
Get the Cereal mug.