A fork of Rural Dictionary
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
hot girl/guy that makes you hard
dude:hey look at the girl over there *points* dude2:she's bonertastic!
Hott enough to give a guy a boner.
Dude, she is "bonertastic"....