Top definition
A reference to having sex. Often used when speaking of casual sex or times when sex could/should be done.

Also referencing the quick speed and lack of caution used when first inserting the penis.

Frederick Bartleby: Man, I'm going out with Angela tonight.

James Worthington III: Just throw it in.

Frederick Bartleby: You're right, I should just throw it in.
by Jeff Smoker March 12, 2008
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