Yo mama's so old, when she was a girl, rainbows were black and white.
Yo Mama So Old Rainbows Were Black and White
Categories
Explanation
This is a classic 'yo mama' joke playing on the idea of extreme old age. It suggests that the person's mother is so ancient that she lived in a time before color existed, humorously exaggerating her age by linking it to a time when rainbows would have been monochrome.