the "surfing" of a tree that is being towed by a vehicle off road. usually a tree is cut down, tied to a jeep or other capable off road vehicle, which is driven around while the surfers stand on the tree and try not to fall off. the driver goes fast and tries to drag the tree through lakes and mud or anything that will knock people off.
dude bro you wanna go tree surfing? k man, tell mike to get the jeep and well go cut one down. i hope i dont fall and bust my ankle again. ah its ok bro it'll be fine