Grumpf

The sound made by the "catcher" when the "pitcher" inadvertently enters the "wrong" orifice.

She let out a loud, muffled grumpf into the pillow when he slipped out and entered the one-way back street!

by Backstroke May 11, 2014

Grumpf

The multi colored lint that appear from out of nowhere in you belly button

Gosh, I wonder what I wore that made red grumpf appear today.

by Sandei Kirshen October 28, 2003