Top Definition
A person who is very kind and honest. He keeps everything truthful and whole. He loves all of his friends and keeps enemies near as well. He knows how to make people laugh, and knows how to break an awkward silence. He loves good music and has a couple of dance moves. He is awesome overall.
Gillis is the coolest kid ever!
by clappingdog November 06, 2011

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The term for any female slut that attends any highschool and has to use any of the following for attention:
1. Being pregnant two times a week.
2. Having "Lots" of sex.
3. Has every STD known to man.
4. Gets 'raped' in the band room.
5. Be approximately 14-16 and claim that you are 18 years old and go on blogging websites and post pictures of adult actress' because your contenance is so wretched a paperbag wouldn't even be able to do you justice.

A Gillis is also a longhand notation for a very and highly contagious sexually transmitted disease, Hepatitis G(Gillis).

Hep. G has three stages...
1. You are extremely horny and hideous as FUCK.
2. Your crotch turns into a contagion for deadly diseases and plagues.
3. You die.

Gillis is a plague that has ravaged Crivitz. Although there is no known cure for her, cans of Lysol have died valiantly trying to end the sufferings of her tyranical reign. She must be burnt and forgotten!
"Gillis, close your legs you filthy fucking whore!"
"Gillis, you're so easy a caveman can do you."
"Ya know, you're as loose as a glass of water"

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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sam(aka freetard) is a gillis. also called SG(super gillis)
sam: whats a gillis?
jared: your a gillis
me: ZING!
by noha March 27, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt