To get Crabtree'd is for a man to become infested with pubic crabs, to such an extant that his penis looks like a tree of pubic crabs, a "Crabtree."

Aside: This usually happens after an individual is too cheap to pay for a clean prostitute.
Man, my friend Bryan bought a $10 whore last night and was Crabtree'd bad.
by AngryDragonTear February 10, 2010
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