People were shocked that Kevin Costner was not, in fact, bulletproof

"You must be older than Waterworld to drink here."

No, I don't wanna show it.  

KIDS

"You must be older than Chloe Sevigny's film career.  And Rosario Dawson's.  To be served in this establishment."

"You must be older than Clueless to be served in this establishment."

Not a Pretty Girl

"You must be older than '32 Flavors' to drink here."

Huh... this bar has been visited by the specter of the American middle class

"You must have been born before the first Amazon online book sale to be served in this establishment."