On a heater
An extreme hot streak in a poker game or casino game. To become very hot in some form of gambling, profit, or accomplishment. To be at the top of your game.
Example:
I was down to my last 20 dollars in the slot machine and then I went on a heater. I was on a heater last night at the craps table, I made a lot of money!
I was down to my last 20 dollars in the slot machine and then I went on a heater. I was on a heater last night at the craps table, I made a lot of money!