Mobile20 double up man = give me $40 worth of rock for $20.
By Rebecca
Double Up
to double up is to let a person know that they need to shut up as you turn up that radio without saying anything
james: my mom wouldn't shut up so i had to double up on her
robin: ahh good move.. did she shut up after that?
james: ofcoarse its a double up
robin: your right ...unbeatable
By June
Double Up
When you are with a bunch of your friends and one of them makes an audible fart. At this time you or another one of your friends silent farts and then blame the smell on the friend whose fart was heard
Its a well known fact that when a guy farts, a girl will silent fart and double up on the guy so he gets the blame.