Top Definition
When a woman or man is so attractive that they give you a boner.
"Wow, Katie Holmes is bonertastic!" - Man who speaks the truth.

"Oscar the Grouch is such a pain in the ass, but he's bonertastic." - Elmo
by SuperSonicX September 18, 2005
hot girl/guy that makes you hard
dude:hey look at the girl over there *points*
dude2:she's bonertastic!
by dee emm June 24, 2007
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