I hate it when people take out a wad of money to pay for something and make you reach and pick it up off the countertop. Especially when they count it out to exact change and just leave it sitting there. Honestly, how hard is it to pick it up and hand it to me after you count it out.
Also, when people reach across into my bubble of a cashwrap and take a pen or a stapeler without asking. They just assume they can use it.
No, you may not.