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When you scare someone so badly that thay cum in their pants, it is called "boo goo"
Lani screamed like a girl when I jumped out at him, and now his pants are full of boo goo.
by Joeittonlay October 17, 2006
It means beautiful gorgeous, a cute nickname that you can use for your girlfriend, instead of muffin or pumpkin, or sweety I mean come on orginality please
It's a nice name that with the meaning behind it, your girlfriend will come to love.

"I love you _ _ _ _ _? , I love you too Boo Goo"
by Gregory Krupa February 05, 2008