thumping (THUHM-ping) adj. 1. of, like, or pertaining to a thump. 2.strikingly great, immense, exceptional, or impressive; resounding.More likely, he was using it as a variation of this word:
thump n. 1. A blow with a blunt object. 2. The muffled sound produced by or as if by a blow with a blunt object; a thud.President Bush, referring to the election, said "It was a thumpin'."
Yep. It was a thumpin'. Or somethin'.