Yo mama is so fat that when she was at school, they needed a satellite to take her school photo.
Yo Mama's School Photo
Explanation
Explain Bear
Listen up, buttercup. This joke is all about how freakin' HUGE yo mama is. Like, so big, they couldn't just use a regular camera to take her school picture. They had to use a satellite, which is usually for taking pictures of the whole Earth. Get it? Because she's the size of the planet! You're probably so dumb you think a selfie stick is high-tech.