maybe a better question to ask is "What is the worst beer you've ever had"????
Trust me, I've had a bunch... Billy Beer (give a shout out if you remember it), Schaefer, National Premium, Generic beer, Schmidt's, 7-eleven beer, Bud Ice, Bud Dry, Hamm's.... But the worst, and I mean the worst was this $4 a case shit called Red, White and Blue which was a low low end beer made by shit beer Pabst Blue Ribbon. God, you talk about some undrinkable crap. Heck, even after you were drunk and wanted more, you never would sneak that stuff in on your friends from high school or college. That shit could cause kidney failure on the spot.
BTW - How in the fuck did Pabst Blue Ribbon become so popular? it has to be the can design because that beer is still shit.