Short name for Hefeweizen, a type of beer that is brewed with wheat, as opposed to the more common barley. It's unfiltered, cloudy, and kicks the shit out of your common on-tap special. A favorite of beer snobs everywhere.
Slovenly Drunk: "Dude, let's go get a case of Bud Light!"
Sophisticated Beer Snob: "I'll drink that piss when I'm dead. Give me a Heffy or give me death."