Definitions by 64 68 2e

JB 

1. Justin Bieber
2. jail bait
3. "blowjob" backwards

Can be used interchangeably, all three are equally bad.

1. That person is the biggest JB fan.
2. That person is the biggest JB fan.
3. That person is the biggest JB fan.

You may have to clarify which definition of JB you are trying to use.

JB by 64 68 2e August 5, 2018