Q: What's the difference between a hooker and a dealer?

A: A hooker can wash her crack and sell it again.

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So this nurse walks into a bank to deposit, walks up to the teller and says "I'd like to deposit this check." The teller says "Sure, just sign right here." The nurse reaches into her pocket and pulls out a thermometer, pauses for a second then goes wide eyed and says "Oh no!" "Is something wrong?" the teller asks, to which the nurse explains "Some asshole got my pen!"