to fasten one's seatbelt. The similarities between the two are endless: everyone hates them, they are for protection, not wearing them can be quite risky, and girls never use them.
Steve: Hey, Andrew, put on your condom. This could be a rough ride.

Andrew: Shut up Steve. But I guess I should...
by My Girlfriend's Friend December 15, 2010
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Another way to say fasten your seatbelts. Seatbelts and condoms are similar : they offer protection, are easy to find, and keep you out of some deeeeeep shit later on.
(getting into the car)
Jane : OK, guys, put on your condoms and grab your oh shit bar!
by Alley L August 22, 2008
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