Top Definition
1) Sex leading to an unplanned pregnancy.

2) An unplanned child.
1) "I'm pregnant?! You must have sneak pumped me."

2) "That kid was a sneak pump."
by J108 March 21, 2013
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.