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1.
When fucking a person(s) doggy style, then proced to knock her arms out of the way sending her face-first into the pillows.
Right at climax, Jono liked to give Rob a boston snowplow
by Jizrod December 15, 2002
 
2.
sex act- ejaculate on a womans chin and push it in her mouth with your testicles.
I gave your girlfriend a\boston snow plow .
by Anonymous11 December 06, 2006