Motortrucking 

The act of placing one's face between the man boobs of a particularly large trucker while vigorously shaking one's head back and forth. Is often accompanied by making the sound of a diesel engine with one's lips.

I love this rest stop. I seldom pass through without doing some serious motortrucking.

Motortrucking by wiley49 February 19, 2011

Mothertrucking

Same meaning as motherf***ing but less offensive to use.

Get the truck out of my neighborhood you mothertrucking idiot!

Mothertrucking by Matthew678 January 9, 2019