A beaver killer does not truly kill, but cripples the erotic drive of the victim. It's a cock block from the source, the girl's perspective. Chopping down the self esteem of the male like a nice big oak tree, the beaver killer is the highest form of sexual denial.
"Did she gnaw at your tree? Did she open the dam?"
"Nahh, she said I was a beaver killer and swam away gracefully amongst the mermaids."
"Damn."
by Triumvirate July 11, 2008
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A herpes infected male genital that is often times very large and can potentially cause mortal pain to a woman's beaver.
Anne - "No way I would hook up with Ryan. I heard he has a rat-infested beaver killer!"
by Pretty Rikky June 11, 2009
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