2. (verb): In a fighting game, namely Street Fighter, this means to go easy on your opponent in the first round of a match, then unleash your full potential for the rest of said match. Coined from when fighting the Dictator as the final boss in Street Fighter II, the A.I. will go easy on the player in the first round, then unleash all Hell upon him/her afterwards. Note that in online play of any fighting game, this is a risky maneuver to try, namely because you don't know the capabilities of your opponents, and that if you succeed in pulling it off, you may make the loser RageQuit and sob all over their now-broken controller because you have raised their hopes of winning, then effectively demolished them.
2. New Player: YES! I won the first round!
Veteran Player: Good Job! Now I don't have to hold back!
Frightened New Player: Wait, Wha-
*Veteran Player destroys the shit out of New Player*
New Player: *RageQuits* WAAAAAAAAAAAHH!!! MOMMY!!! THAT GUY M. BISONED MEE!! I'M GONNA BITCH AND MOAN ABOUT HOW GAY AND CHEAP HE WAAS!!! WAAAAAAH!!!