Okay, still don't understand the swallowing smoke thing, but I'll give it a shot.

Anyway, my friend is able to let out a puff of smoke from his mouth even though he never smokes, and we live in Hawaii so it's always hot. So, does anybody know how he does this? i notice he kinda closes his mouth real tight before he does it, like he's holding in his breath and building it up or something, but I still don't know how this is possible.