I can do both, lol
I remember as a kid being so envious of those who could whistle with their fingers in their mouths, I never figured out how to do that
Used to be able to do both, now only the bubble gum thing.
I can whistle but i've never been able to blow gum.
I can, but there's tons of kids stuff I'm sure you know or loved ... do u have a fave. memory ?