When a boy jizzes in between a girl's tits, then rubs his dick back and forth in the area between the tits, pushing the jizz to the side. This replicates how a snowplow pushes snow to the side of the street.
Over-excited boy, "Man, I totally gave Sarah a Minnesota snowplow last night!" "Bro, no fucking way, you're the man!" "Yea you should have seen her when I was done, she was covered!"
A sexual position where one person is on their hands and knees and the other person (always male) penetrates the vagina or anus from behind. The person penetrating will then pull the other persons arms out from under them thus forcing them to fall forward as he thrusts.