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3.
The process of pissing or urination. This definition is specific to male urination whether it may occur in bathrooms, public arenas, trees, or a neighbor's flower garden.
Josh drank beer for hours before he had to shake the baby.
by Kevin Joyner January 06, 2006
 
1.
To go off. To lose control. To "go in." To "go ham."
To lose your mind. To go all out. To act a fool. To lose your cool.
I can't wait to get to the party tonight. I'm gonna shake the baby!
by Dirty South Joe March 31, 2011
 
2.
To do somthing accidentally out of frustration or anger.
I know you've all had a long day but stay focused and don't shake the baby.

Wow, man you really shook the baby on that one.
by Deadwaite May 09, 2010
 
4.
Men: The act of grabbing a girls ears while she is blowing you and vigorously shaking her, increasing her RPMs and your personal satisfaction.
Sarah was blowing Steve, but she was licking it like a Mr. Freeze and wasn't getting into it. It was time to Shake the Baby!
by Dutch Milkshake June 07, 2009