Top Definition
Someone that has sex with animals in the ass with no lube.
What are you doing with my dog?...OMG you beasto!
by Dematron August 20, 2011
A man whose a total beast. He gets all the woman and can kick anyone's ass. Hes the buffest, the bravest, and most daring. Super good looking but slightly slow at times when it comes to relationships. Beasto's always win. Typically has the best looking girl that everyone is after ( his Von BLack).
1.Michael was the sickest at that party last night! Soooo beasto!
2.from the movie "the haunted world of El super beasto"
by yoshikitty :) July 29, 2011
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