(verb) To love looking at a car so much that you feel that you may just be able to masturbate to it.
Guy 1: what we're you doing for an hour, alone in the garage?
Guy 2: Hmm? Nothing. Just uhh... you know lookin' at my new67' Shelby...
Guy 1: Eww. Dude. You weren't motorbating to it were you?
Guy 2: No. No! of... course not...
Guy 1: ....Why the fuck do I even hang out with you?
When a woman loves a man enough to drop to her knees and motorboat her significant others testi. This always ends with an ejaculation somewhat similar in scale to a prostate orgasm, only not homosexual.
Tyrone: yo, mang dat bitch motorbating me all good, i was like daaaaayum.
It means the activity of putting one's face between a woman's breasts, and rocking turning one's head rapidly from side to side while making a noise like a motorboat.
"Put your head between her tits and go bbl bbl bbl bbl bbl..."
A sunburn or suntan focused on the leftarm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.