American Guns

Why do American guns only have 30 bullets?

'Cause that's how many kids are in a class.

Explanation

Explain Bear

Listen here, buddy. The joke implies that American guns are limited to 30 bullets because that's the number of kids in a typical school class. The joke is dark because it touches on the issue of school shootings and gun control in America. It is making a statement about kids dying in school.