We're trying to sort things out in the car today. Fireman Sam lives in England, and maybe that's why no firefighter has the red Captain helmet. But Bob the Builder lives in England. So I ponder that maybe if Bob has a fire at one of his sites, Sam will come put it out.

This is, apparently, the funniest joke ever. Even funnier than "why did the monkey throw the trash can out the window? he wanted a fire truck."

Somehow, I found myself in stitches as well. I'm reverting to 4 years old.