1. Mass consumption of gas-causing foods in order to become more flatulent than another decidedly gassy individual within close proximity.
2. Threatening to consume gas-causing foods in order to become more flatulent.
1. After inhaling his roomate's farts for nearly an hour, Mike decided it was time to strike back. He rathcheted up the ass by devouring some jalepeno poppers and three large orders of Burger King onion rings.
2. Mike warned his roommate that if he didn't stop running into his room every five minutes and farting, he'd be forced to ratchet up the ass.