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
Random Words:
1.
A verbal disorder causing abnormally loud speech while using a cellular device or land-line telephone. This disorder also causes great ..
1.
Showing praise or thanks through name reference, and direct messages toward a person or place on sites like twitter.
Even all these wee..