Top definition
You thought you were going to crap your pants...launch sequence initiated and you're at T-30 with the nearest bathroom at know you're in trouble.

Then, you get a gift from heaven. You thought you were going to shit your pants, but you're given the gift form above...Mercy Gas. Just enough to buy you the time needed to defer the launch sequence until you can drop your drawers in the crapper.
I just knew I was going to crap my pants, then i was blessed with a puff of Mercy Gas.
by ripperdome December 14, 2014
Get the mug
Get a Mercy Gas mug for your mama Sarah.