I'm British...and I love peanut butter and jam sandwiches! It is an American thing though, but some of us know about them...I think through reading Judy Blume books as a child!
When my mum used to make my sandwiches for school, she refused to make PB&J for me, so she'd make one jam, one PB, and when I got to school I'd swap the top slices and squish!
Yum!
Vicky