motorscrote
The act of pushing one's face between the space where testicles meet scrotum and swinging one's head from side to side very rapidly while making a vigorous, lip-vibrating "brbrbr" sound.
I knew it was true love when he gave me a motorscrote. The top of my balls are still numb!
Motorscroting
When a chick motorboats your nuts.
I hope she doesnt sneeze when she's motorscroting me.