what would a good example of white american snack?

Come on, Scooby. In America, white, black and green kids eat the same thing...either peanut butter and jelly sandwiches...or pizza <G>

i was thinking cheese

Some kids like it, some don't, regardless of ethnicity.

chitlins? (chitterlings)

That is not white boy snack.

stuffed olives? Maybe white boy stuff.
or more likely white girl stuff.

Cold tongue on rye, with mustard? Definitely white boy stuff.

I agree with GuruBlue, there are very few differences in USA. Maybe cherry peppers, which once was the domain of Italian boys on the East Coast, but those are widely used in Southwestern USA and N Mexico now.

Up here here in Canada, white Canadian snack would be marshmallows, apples and pears. Apples and pears are white inside.

Black Canadian snacks would be black licorice, some might even like black olives.

Some of our snacks are even purple and orange.

potato chips, cookies, ice cream

Angie, having taught in the South for 20 years, I can tell you that those junk foods are equally favored by all races and ethnicities. All the kids tend to obese.