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1.
This term originated in the western suburbs of Sydney, in the Jarndi area.

The term jailtrap refers to a collective group who are under the statutory age of consent (minors), however, the group present in such a way that a non-deviant individual may mistake them for individuals of age.

This differs from jailbait as the danger presented by this situation is almost as grave as being in a scissor trap. Scissor, get it?
Digi: Bro! those bishes be smoking
Den:Bro...
Digi: Bro?
Den: They definitely jailbait. you gotta stay away from that shit
Digi: Fuark. That aint jailbait, that shit jailtrap fo sho.
by Arbitrary Shitty Banter February 07, 2013