You know what’s awkward? When, after ordering something that costs $4.38, a customer gives you a twenty dollar bill and then says, “Wait, I have two pennies!”
You take those pennies and then you owe him $15.64, instead of $15.62. Is that what he was going for? Probably not. You have to give him the right amount of change, but in giving him the right amount of change you’re indirectly insulting his intelligence.
Hey, I get confused by coins sometimes too. That, however, doesn’t make anything less awkward when I’m behind the register with a useless amount of extra pennies in my palm.