A trap is a deliberate action. A trap is done on purpose. By calling someone transsexual a trap, you've essentially devolved someone's entire life experience as a means of trapping frail minded males into thinking they're female just so they can sleep with them; it is vain and egotistical without one thought of the other party's feelings. When you consider the amount of transsexuals that are beaten, abused or even killed because of just being transsexual, it's pretty understandable, but that doesn't always make it right. In my opinion, if you're transsexual, you should tell the person before anything romantic (such as kissing) even happens to see if they're okay with it.