While giving anal sex to a girl in doggy style position, you kick out her arms (don't break them) so she falls on her face, she'd then put her arms around her face and you'd push around the room like a snowplow.
While giving it to her in the ass, I took out her arms and gave her a snowplow!
the REAL definition is this: a man is giving it to a girl from behind. he then pulls her up by the legs and knocks her arms out from under her. He then proceeds to drive her across the carpet on her face like a snow plow.
I gave Cindy the snow plow last night, and her tits are STILL red!
During intercourse; Most often occurs in the 'doggy' position. When the giver lifts the givee's up in a wheelbarrow-like position and walks forward fast enough for the givee to lose stability and fall on his/her/its face. The giver then proceeds to push forward, scraping the givee's face on the floor. Usually results in injury.
You should have seen the carpet burn I gave her last night when I gave her the snow plow.