As a non-native English speaker, sometimes I couldn't get why some joke was funny. Like this one:
The joke:
Once when I was a kid we were packing the car for a trip. My brother and brother-in-law were in the back yard playing catch. (Yeah, I know, why weren't they helping to pack, but never mind that.) As I walked by with several shoe boxes, heading toward the car, my brother-in-law looked at me. Right away I said?-
"I don't know why Dad doesn't use a wallet." It got a big laugh.
******************************
I think "wallet" here meant "travel bag". I guess why "I" got laughed is that because "dad" was to travel in car, so asking him using a travel bag is childish...
Am I on the right track?