Today's gayspeak is not necessarily gay, but good to know for any man that wants a little fellatio fun.

빨아 줘 (bba-ra jweo)

The first part of this phrase comes from 빨다 (to suck) and 줘 is the informal way to say give it. So give me a suck. Blow me. Give me a beej. Whatever you want to call it, this is a great word for the bedroom.