A methamphetamine user. Jib rats are known for their extreme paranoia, flagrant dishonesty, and lack of trustworthy friends. A jib rat will steal your stuff and then help you look for it.
If you let those god damned jib rats come to your party, don't expect to have your stereo in the morning.
by James Smithers May 27, 2007
Get the Jib ratmug.