Top Definition
1) Someone who gives a blowjob while still having his or her retainer in.
2) A preteen who engages in early sex because preteens are notorious for having braces.
Jeff is such a Retainer Banger I got a blowjob with plastic.

Mike is such a Retainer Banger his is only 15!
by Cody Jz August 20, 2008
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