system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Transgender, transsexual, transvestite

My friends and I couldn't figure out a definition of each, and when we looked it up it seemed very vague and perplexing. Please explain like I am 5 the difference between them.
gpt
Someone with a boy body and a boy brain who dresses like a girl when he feels like it is a transvestite. People will dress up like another gender for all sorts of reasons even if they don't think of themselves as that gender. Some do it for fun or sexual kinks, like Dr. Frank N Furter from *The Rocky Horror Picture Show*, and some do it for social purpose, like Mulan dressing up as a man to go to war instead of her father.

Someone with a boy body but a girl brain is transsexual, because they don't match. Sometimes these people go to the doctor so they can have a girl body for their girl brain. This has much more to do with 'gender identity' than it has to do with what someone dresses as, and usually has a heavy implication of physical sex changes.

Transsexuals and transvestites are both transgender the same way red cars and blue cars are both still cars.