Tricky's phone falls from the building onto the Hollywood Walk of Fame star for Eric Christian Olsen, Ryan's nemesis in the previous season. Olsen doesn't actually have a star on the Hollywood Walk of Fame.
After Boris tells Ryan and Vince about a prank played on him by a YouTuber dressed up as "scary Joker from new Batman" Ryan looks heaven-ward and says, "I hope they're taking care of you up there, Jared Leto," mistaking Leto for the late Heath Ledger. Each portrayed The Joker in different film projects.
Ryan claims that both he and Timothée Chalamet were born in the 1990s. "The eighties are only something we've read about in history book... excuse me, history blogs." Chalamet was born in 1995, but Ryan was born in 1981, Later when Ryan flashes his badge at Boris (Christopher Darga) and says, "There's been a murder old-timer," and Boris replies, "From the looks of your driver's license, Boris is five years younger than you." This is pretty much correct, as Darga was born in 1987.