To frat at an exceedingly high level. Participation in numerous fratty pursuits, carried out with a high level of skill or experience, constitutes fratting hard. These activities include, but are not limited to: golfing, medical school, law school, shacking, formal, mixers and sailing.
Southern fraternities frat the hardest by far, but those Betas in Nebraska are fratting hard as well.
Frat doesn't take a day off because it's partially cloudy.