Sam's Club is worse. Every time I go there, I get stuck behind some half-dead lump of flesh that's slowly ambling around the store, down the middle of the aisle, making my efficient shopping strategy much more difficult. Oftentimes, if I'm feeling silly enough, I'll just amble along behind them with a zombie swagger and groan "brrrraaaaaaiiiiinnnnssss" until they get the hint.
For f*ck's sake, you cocksuckers, I come to Sam's to get groceries, not to spend my day browsing for bulk crap at a snail's pace. I suppose, though, that for a lot of Sam's Club customers, that's the high point of their week.