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A supermodel-She is super hot and loved by all men and even women. Even gays and bisexuals love her.. She has a super sexy body and a hot round tight ass and shes very good in bed. She is perfect
Shes too hot, she's a bisy
by christopher1000 May 29, 2011
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It means "Bye sis!" (sis means sister). It can be used when talking with friends.
Charlotte - I got to go. Bye!

Randee - Bi sys!
by yasi. December 14, 2017
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