What is Back It Up?
1.
What a guy says to a girl he's fucking from behind - asking her to push her ass back so she grinds onto him.
Also, in lesser used context, it means a girl has a nice ass.
*A couple doing it doggy style*
Chrissy: "Oh that feels so good!"
Tom: "Oh yeah, you want it harder?"
Chrissy: "Yes!"
Tom: "Back it up, back it up!"
See
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The Acura Legend, sold as the Honda Legend outside the U.S., Canada, and parts of China, was a sporty luxury vehicle sold from 1986 to 1..
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to chill. (ie refrigerate)
Did you zooba rooba those beers like I told you to, fuckwit?..