Working at the DG has caused me to have violent fits or rage over can stacking.
There are the cans that have the smaller metal lip on the bottom. The outside of this ring fits perfectly to the inside of the top of another can. It makes for some darn nice stacking.
On the other hand, cans with the same radius on the top and bottom piss me the forget off. These bastards won't stand more than two high. Even big names like Campbell's don't make their cans stackable, whereas some generic cans stack oh-so-smoothly up to five cans high.
Holy stuff.
