A somewhat childish question, I won't deny it, haha, but also a somewhat interesting one.

I think I'd go with teleportation and if you grabbed my arm or hand you could teleport with me. Or when a girl unzips my pants she magically gets the exact size she wants, haha.

A lot of people say flying, which would be pretty bad ass, but if it rains your still stuck inside. That's why I choose teleportation.