2. A way of judging the "legitness" of a rap song's bass, if the change rattles than it is considered a legit song and should be enjoyed at a very high level.
"You'd think Jay-Z would try to make his songs more legit by making them rattle more change, so they would be Change Bumpers"
Examples of Change Bumpin' Songs:
A Milli by lil Wayne
Bombs Over Baghdad by Outkast
Fuck tha Police by N.W.A.
No Tears by Scarface
Forgot About DRE by Dr. Dre ft Eminem
Because I Got High by Afroman
This is just a list of examples of Change Bumpin' music, there is a seemingly endless amount out there. Other songs can be considered Change Bumpin' with a vote of 3 or more people, and has to have majority vote or it is not considered to be a Change Bumper