A term for administering rough anal sex, usually to a ass virgin.

A favourite move of the notorious ladies man 'Ibby', who is believed to have coined the phrase.
Example:

That bird won't look so high and mighty when I bash the back doors in on it
by The Spike February 22, 2007
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having incredibly rough porn-star like sex with a female because shes incredibly attractive. usually in the doggy-style position hence "back doors"
LAD number 1: oh my fucking god that girl is so hot my testicles are pulsating

LAD number 2:...... phhrrooaawwwwwrrr....i'd "bash her back doors in".
by back door basher October 9, 2011
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