Just like the word serious but more seriousness. Usually used by the more popular kids at school.
Dude I'm Cerial I really did it with Carmen Electra.
by John Greg September 30, 2007
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An adjective to describe someone who not only looks and acts like a serial killer, but also exhibits qualities of a cereal like nature.
"Omg! Look! It's that cerial kid! He totally looks like he is going to hurt someone!"
by Mr. Bleil April 24, 2008
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adj.

1. Grave in quality or manner.
2.
1. Carried out in earnest: engaged in serious drinking.
2. Deeply interested or involved.
3. Designed for and addressing grave and earnest tastes: serious art.
4. Not trifling or jesting.
5. Of considerable size or scope; substantial.
6. Of such character or quality as to appeal to the expert, the connoisseur, or the sophisticate.
3. Concerned with important rather than trivial matters.
4.
1. Being of such import as to cause anxiety.
2. Too complex to be easily answered or solved.
He gave me a cerially look
by r00t February 4, 2005
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The person who is wanted for the murder of such people as Tony the Tiger and the Trix rabbit.
I know there is a cerial killer on the lose when i see a leperachan drowned to death in milk and is imprisoned in melted marshmelllow! beware all iconic cerial mascots! you may be next!
by oh noez!!!!!!! September 17, 2007
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Means the same as fo sho and fo real?
Person 1) omg i got my leg chopped off by a Crazy Ninja

Person 2) omg fer cerial?
by Gorbalx the Impaler May 10, 2009
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somebody who's so fat he probably eats every breakfats cerial on the market.
This guy's so fat, he must be a cerial killer.
by erik April 19, 2004
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A faggot who plays on xbox live all day and thinks hes cool by picking on little kids online on cod4 untill oscar714 verbally rapes him another asshole and no longer wants to talk any more same goes for his boyfriend tz830 who is a racist against mexicans but then again his mom loves my fat mexican cock in her vag and then i leave her ass cheeks red just like active cerials face and then i leave her vag looking like bubblegum
oscar714 fucked TZs mom like crazy last night while tz and active cerial were having xbox live sex with eachother.... FAGGOTS
by not gay like active and tz August 24, 2008
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