As a retail person, people unstuffing a bag to see if everything fits in are way less annoying than people who feel the need to open umbrellas up.
An umbrella is an umbrella!!
Unless, of course, it doesn't open.
I'd be the one opening it it to check (if I actually bothered to own an umbrella).
I'm the person who had to return the TV to the store THREE TIMES because the on-off button didn't work!!
I'm the person who had to return the last comforter I bought for my queen size bed twice because the first two were marked with the wrong size. The store was not happy when I insisted on opening the package and checking the tag on the comforter before I left the store with it!
I'm the person who buys a brand new vacuum cleaner that doesn't work and can't be fixed. (They gave me a new one of course!)
I test and try Anything and Everything I can!!