An autoerotic or homoerotic activity in which butch gays and bis get their shoes, jeans and even whole selves muddy while pounding tar around town or skating. Mudding is the latest fetish to reveal itself online in a big way. Also called "muddin'."
Derk and Craig always went mudding around The Charles after skating through Cambridge, getting their baggy jeans and Airwalks all dirty and wet.
by BleekerStreetBrian March 02, 2008