Just say walmart. I can't even tell you the last time I successfully made a purchase there. I have tried but it never works out. I feel like the crying Native American from the old psa's everytime I walk in there, except way more materialistic, pissed off, less emvironmentalist, and no actual tears. So it's nothing like that but the imagery works kinda but not really. Anyway...
I try to navigate through the chaos of garbage that they call product, beyond the herds of assholes in fuschia sweat pants to find the one piece of junk that I don't really need and if I make it, I have usually given up by now, I surely will run into the bottleneck described in your post.
The end result is always the same. "**** this" ,I drop ******** junk where I stand, give everyone the evil eye, march out murmuring, disappointed, angry, hoping that some decrepit old man will ask for a receipt for the **** that wasn't worth buying so that I can tell him to go **** himself so that I can release some aggression before I get behind the wheel. Regardless I will probably scream the whole way home either to some metal album, likely slayer or devildriver, or just simply scream like some mal-adjusted terrier with tourette syndrome.
When I get home my wife will ask if I got what I was after, knowing with certainty that I did not but rather left in a rage. "**** No!" I will reply followed by a 10-15 minute rant about how much I ****ing hate shopping especially at WM(during which she will politely try not to laugh).
For some reason a year or so later I will think that it will be OK. I will try again but the result will be the same.
Srsly I holy ****ing monkey balls dog ****ing *** pounding hate walmart.