An affectionate name for a lady or gentleman who lets a great many binderfenders and dead badgers.

A prodigious farter.
Who do you have for third period English?

Mrs. Sweeney.

Oh, wow, you have Old Thunder Buns? I wish I was in there with you! It's gonna be a gas!
by Tuna Wanda May 26, 2005
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A fart so hard it makes your butt cheeks clap like thunder
After eating Taco Bell, I had machine gun bun thunder .
by MissyAnn March 17, 2017
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