Well, I'm not a guy but I can't stand being in stores if I'm not the one shopping, and I can't stand "shopping" if it isn't going to reasonably quickly result in actual buying. When I'm with a companion of either sex who spends more time in the store than I'm interested in doing (and honestly, my kids would back me up when I say that their father should "win The Prize for how long he looks at stuff before actually buying anything, if, in fact, he ever does buy at all) I just go outside an do something like find stuff on my smart phone or find something to read on Kindle. I sometimes get a coffee or tea to bring with me, and turn the outside wait into a nice, little, fresh-air "me alone" time. I'll check my e.mail, call people, whatever... Or, I dig out my GPS from purse and clean out unnecessary stuff, get phone numbers from local points of interest (I use the GPS as kind of phone book for businesses in the area that I don't call often enough to keep the number in my phone contacts). Also, I'm not above taking pictures (either with my phone or the camera I keep in my bag) of things like the sky, any flowers near the stores, anything I might possibly use in a Hub or other online writing (a brick wall, a squirrel, a stop sign - whatever there may be). I've also got a mini-radio in case I want to see what people are talking about on talk radio.
See this is the difference between men and women: Men need to learn to carry purses, and purses big enough to keep their electronic stuff with them at all times. :) :) (If it's a wait that I see coming I make sure to add my little laptop to that purse. :) ) As you know, though, sometimes it's not possible to predict when one of those aggravating waits is going to happen.
AND, the beauty of carrying a purse is that yet something else to do while on one of those unbearable waits is to straighten out one's wallet or purse, trim out any cash accumulated register receipts, make sure one's keys are where they ought to be (so they won't be lost when needed), etc. etc.
So, GET A POCKETBOOK, YOU MEN!!!!! :) Fill it up with stuff to do and stop (forgive me, but a lot of you guys have it coming) WHINING and wasting valuable time that could be used for multi-tasking. (I hope people see my attempt at humor here) You aren't the only ones who ever have to wait for someone who takes too long to shop, and you're not the only ones who don't like making an hours-long affair out of buying stuff.