“I’m gonna lock her up in a tower”

MAX: She’s young, she’ll move on, she’s got college next year.

LORELAI: Great. Frat boys, I cannot wait.
MAX: Just get a keg, keeps them distracted.
LORELAI: Oh, well, thanks for the advice. I’m gonna lock her up in a tower when I get home.

A reference to the fairy tale Rapunzel, previously discussed.