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A grand old tradition in which a female will take a picture of her titties and send it to a spouse/boyfriend/fuckbuddy/celebrity/or just a lucky random person if it is their birthday. "Happy birthday" may or may not be written across the hills.
"Hey what did Sarah give you for your birthday?"
"I'll show you"
"YOU GOT BIRTHDAY BOOBS?! Damn you are lucky and she is a keeper. Dynamite nips by the way."
by goldstaylives November 12, 2013