a student that goes to a catholic school, such as mission

Most likely the most used and liked position in gay sex. Now the straight side has been told many times.
Now, the gay side, why would one like that position most?
As said in a previous definition it is because it is the position in which it is easiest to insert without harming. Especially for first timers, since it will hurt when not accustomed to it. It also is more personal, with the participants facing each other, making kissing possible and the expressions visible to each.

One guy lays on his back, with his legs around the others waist or on the others shoulders. While the other has his legs on each side of the first guys hind quarters, inserting in a kneeling position. This opens up the bottom's anus, making it easier for both participants.

One who is sent on a mission, especially one sent to do religious or charitable work in a territory or foreign country.

One who attempts to persuade or convert others to a particular program, doctrine, or set of principles; a propagandist.

ie) Christians

Alright, you guys are wrong: the missionary is where the girl lies on her back with her legs spread on the edge of the bed and the guy takes her standing up. And yes, it's boring, but you get to see her boobs jiggle if you know what I mean :).

Any person whome engages in the act of smoking methamphetamine, particularly one whome is addicted and/or binges.

The Christian term instead of using the word "pimp" to use to say that someone or something is cool