look up any word, like ratchet:
 
2.
showin' off your new clothes/kicks/anything new
"yo, dude, i'm going to the mall to ramp up the jawn later on. you wanna come with me?"
by jklolz May 25, 2005
 
1.
a phrase used by BMXers expressing emotions of encouragement.
Dom, ramp up the jawn, bitch!!
by Dom P. November 05, 2002