Nowadays with speedy Internet and in order to play lots of opponents and to decrease the chance of cheating, people are opting for Bullet or blitz.
Generally I prefer to play Larsen opening or Double fianchetto or sometimes Ruy lopez. The traps in these openings are not in the openings but in the captures ( capturing the pawns or Knight with bishops). If the opponent is careless and pre- moves then these tricks work.
But many of the players are unaware of these things and many other gambits or trick.
If you are a pro player of bullet games what bullet-specific tricks do you use?