When a group of people offend each other to see who can roast the best.
Person 1: Who wants to do a roast off?
Person 2:ME
Person 3:No, you're too ugly.
When someone’s doing something that annoys you
Bro Daniel’s been roasting my face off all day
When someone is driving a vehicle and stops and spins the tires posi locked so both of the tires burnout until they blow.
When two or more persons are going at it like the Kardashians
John, Mary and Luke were having roast-off on who had the bigger dick, oh, and Mary as you guessed by now is a transvestite.