It's a plot

Do you want to know how to find the slowest line at Wally World? Get in one.
It never fails. We scope out the lines looking, for the shortest one (as an FYI these are usually the lines that are the 2nd layer in - closest to the door, not the shopping), or the one with more people but only with a couple things each (skip those 20 or less lanes 'cause no one can really count and they are way too long). We zero in on the perfect line and scoot into it. Then one of the following things happen:

-The cashier closes the lane
-The cashier picks that moment to change/count their cash drawer
-The cashier picks that moment to change lanes with another cashier (and both count their drawers)
-The cashier finds a new friend in line in front of you and proceeds to talk about their life (for the rest of yours)
-The cashier develops a bizarrly curious interest in every single item going across the scanner
-The scanner refuses to ring up and item and the cashier tries to re-scan it 37 times before typing in the UPC code
-The cashier finds an item that needs a price check, puts the flashing light on to call a supervisor, and stops ringing up the rest of the order (btw the supervisor never shows)
-The customer realizes that they forgot to pick something up and rushes off to get it (in the back of the store) with their order half rung up
-The customer has brought a one of a kind item from the depths of the store with no price tag or bar code - The cashier and supervisor is not authorized to make up a price, so they call someone from the dept where the thing might have come from. No one answers for a long time. When someone answers, they go off looking for another one of those things in their dept, and come back after a few minutes and say they can't find one (remember it's a one of a kind). The customer doesn't think to be considerate to the 50 people now behind them and dump the item, but talks to the cashier (who hasn't rung up a single other item yet) about how this always seems to happen to them...

Thank you for shopping at Wally World!