Traps are
men who looks and dresses as a girl. This "Traps" other
men to be attracted to them, which is gay, but other people say its not because they look like a girl. Although there are some in real life, Traps are mostly found in Anime where a guy dresses up as a school girl and there's a shocking revelation that they're a guy.
*This is different from being
Transgender*
In the anime, Trapidemi
High school (Not an Actual Anime), there a band of
high school traps that seem
like normal high school girls by day, but by night they vanquish evil with their most deadly trap power, the element of surprise.