Three stories ...
First I was visiting relatives back east and we all decided to go bowling one evening. My aunt calls the alley to see what time open bowl is and the pricing. The guys tells her the info. My uncle then tells her to ask "if he has 16 pound balls" ... which she did. She turned bright red. We couldn't stop laughing.
Second I was working a now defunct department store (VanLeunens) in the Toy department during the Christmas rush. A lady walks up to me and bluntly asks "do you have super balls?"
Third during a family vacation we stepped into an elevator and my dad looks at the control panel and sees the braile next to the buttons and says "They should highlight that in a bright color!"