Sankaku Channel/trap

Surprise! "She" has a penis! Or, at least there's the definite possibility of a surprise futanari. Also known as "You got some shota on my loli" (shota in my loli of course belonging to straight shota).

Trap, also known as tomgirl or "sissy", refers to a male who appears female. Trap can also refer to a male who has feminine characteristics and can be mistaken for a female.

A trap is different from Futanari as a "futa" is a woman with a penis but, a trap is a man who may just look like a woman.