Bum Thunder

The act of farting on someone's johnson during anal sex.

James, I'm going to bum thunder you.

by Lady Thunder April 5, 2013

Thunder Bum

When one has a severe dose of Diarrhea

After eating a very spicy or hot meal which then results in you "Following Through" to the extreme you have a dose of "Thunder Bum"!

by Flattyflatdog October 9, 2011