Naomi calls the late-night diner patrons "Hoppers." This is a reference to the painting Nighthawks by Edward Hopper, which displays a few patrons at a diner late at night.
Jake correctly points out to the bouncer that poet T. S. Eliot was actually born an American. Eliot renounced his American citizenship and became a British subject in 1927. The title of Eliot's poem "The Hollow Men" was adopted as a title for an earlier season 2 episode of the series.
Ezekiel orders a 300 quid drink made of Louis XIII cognac, lemons, and Cointreau infused with 24 carat gold flakes. The gold content of the Cointreau would certainly be less than 0.2 gram, less than $10, per bottle. Louis XIII cognac, however, costs from $3,500 to $8,000 per 750mL bottle.
Ezekial says his skateboarding photo shows him doing an ollie impossible. The impossible involves getting airborne, lifting your forward foot clear, then using your rear foot to horizontaly spin the board a full 360 degrees before landing. You do not use your hands.