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1.
slang for "No Way!" or "Woah!"
Guy 1: Dude, Dan asked Katie out!

Guy 2: Jump back! I was gonna ask her out!
by Gina March 22, 2005

Words related to jump back

back balki get out of the city! greek jump no tv way
 
2.
To shout in absolute disbelief, while wearing faded tight blue 80's jeans, a white singlet with a look of shock on your face.
e.g ...jump... back...
In the great 80's hit Footloose Kevin Bacon says;
“Jump back! This guy doesn’t know a dance from a dipstick!”

by tersh August 30, 2006