A smile that is so big, that all your teeth show, and it looks like you are the happiest kid on Earth.
On Christmas, the girl was so happy that she had a kool-aid smile.
by jaaaayr December 22, 2010
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a large, cheesy grin on a person, similar to the one the Kool-Aid man has in the commercial. A Kool-Aid Smile is usually seen when a person has accomplished a major feat or task, or something extraordinarily good happens to that person.
Ryan walked out of her house with a big ass Kool-Aid smile on his face.
by Rey Del Fuego November 11, 2007
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A very big smile.

When a child drinks kool aid or some other brightly dyed beverage and ends up staining the outside of their mouth.
He's had a kool aid smile ever since the birth of his son.
by Blowfish July 26, 2005
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The smile a girl puts in when she's crushing on s guy.
I know you like him. You've got that kool aid smile on.
by Quirky24 January 1, 2012
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1. (n.) the result on ones face after performing oral sex on a female who is menstrating. A possible side effect of getting your red wings.

2. (n.) a big bright contagious smile!!!
"girl, he went downtown to get his red wings and came up w/ a kool-aide smile!!!!"
by KatNat March 18, 2009
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When a guy goes down on a girl who is on the rag and when he comes up he has a ring of period blood around his mouth that resembles the effects of drinking red Kool-Aid.
So I went down on her last night, and she was on the rag, when I came up I had the biggest Kool Aid Smile ever.
by Anonymous_Hero April 5, 2010
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A long, deep, curving cut across the lower half of the face made by a razor or knife as a calling card by a rival gang or serial killer.
All the victims were found slumped over in their chairs, all blood having been drained through the killer's mark of a Kool-Aid smile.
by FreddyButt June 7, 2019
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