Bullet tips and tricks 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?
These tricks work much better in bullet, where flagging is probably 50% of the game, than in blitz.

The obvious one is to reply to the start of a fianchetto by threatening the square the bishop is about to move to in case it was pre-moved. e.g. reply to g3 with Bh3. Of course if your opponent didn't pre-move and your bishop is unprotected then you lose a piece but you should only do this when your opponent is playing some opening with minimal contact and with automatic moves like for instance the Kings Indian Attack with white.