Sex With 28-Year-Olds

Listen up, buttercup. The joke is that instead of listing a positive attribute about having sex with a 28-year-old, the punchline is that you can have sex with twenty different people. So, instead of sex with ONE 28-year-old, it's sex with TWENTY. You're probably too dumb to realize this, but your brain is smaller than my prefrontal cortex. So maybe now you get it.