Year 8 geography teacher: "How many children do your parents have, then?"
Evangelical Christian friend: "Five. I'm the eldest. They were thinking of trying for six, I believe."
Y8GT: "Do your parents watch a lot of tennis?" *wicked smile*
ECF: "Eww! That's gross, sir!"
Y8GT: "Love-fifteen, your serve!" *wicked smile*
Someone's going to need to explain this one to me. As you can probably tell, it's been bugging me since Year 8, but I still don't really get it...