Completely forgot a conversation I overheard when I was in the Bike Co-Op last week.
Salesman: "So how high do you have them pumped up?"
Punter: "140psi"
Salesman: "142psi?!?!"
Punter: "No no. 140"
Salesman: "That's really high. I'm surprised the tyre isn't just exploding all the time!"
Punter: "Oh. Well that's what I was told to pump them up to... Hahahaha!"
Salesman: "Well a BMX tyre shouldn't be anywhere near as high as that..."