To not go through with something; to not go with or not show up. To bail on a commitment such as a date or promise. (Popular during the '70s..a variation on a wrestling move called a "jap-out" where you escape your opponent.)
"Ok, let's go to the mall tonight, just don't jap out on me." "He always japs out when it comes to paying for beer."
by God1va August 17, 2007