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1.
a girl or guy who has braces which then gives oral to the opposite sex leaving scratches and bleeding;uncontrollable pain for the other person.
"Budd, she's a complete chainsaw massacre""
by experiencer December 25, 2009
 
2.
when your having sex with a girl and you chop her to bits with a chainsaw.
It was going really well with Chad but then he tried to Chainsaw Massacre me, I dont know if I'm there yet.
by Curley Matt Marringdingding December 09, 2008