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A meme originating from 4chan that refers to crossdressing men who look dangerously woman-like, hence the name "trap".
As a rule of thumb, if you can correctly tell the gender with complete certainty from the thumbnail alone, it's not a trap.
A trap is still a male character, and should be tagged as such with the appropriate tags (such as the #boy/s tags).
See also reverse trap for ladies who dress like men.
See also drop trap for a literal type of trap.
Read the full article.
