Q: How did Rihanna find out Chris Brown was cheating on her?
A: She found another woman’s lipstick on his knuckles.
Lipstick on Knuckles
Categories
Explanation
Experiment
Explain Bear
Listen here, genius. The joke is about Rihanna finding out that Chris Brown was stepping out on her. Instead of lipstick on the collar, there's lipstick on his knuckles. The joke plays on the stereotype that dudes like Chris Brown are violent.