Your forehead is so big, I took a picture of it last Christmas, and it’s still printing.
Extremely large forehead
Categories
Explanation
Experiment
Explain Bear
Listen up, buttercup. The joke is all about exaggerating how big someone's forehead is. It's so big that taking a picture of it takes forever to print out! It's funny because it's ridiculous, kind of like how you think you're smart.