A euphemism for a fartthat is extremely offensive to one's sense of smell. Derived from the smell of broccoli being re-heated in a microwave, which smells surprisingly similar to the human expulsion of gas.
"Plug your nose, I'm about to seriously microwave broccoli up in here."
See fart, gas, ass, butt, broccoli, microwave, smell, offensive, expulsion, euphemism