The actor chatted up about intimacy garments, boy aquariums, and even showed Fallon how to create his popular back arch that had fans going wild last month. Naturally, the picture showing both Williams and Fallon on all fours quickly went viral, so check out the highlights below!

Jamie Campbell Bower appeared on The Tonight Show Starring Jimmy Fallon this week to talk about Stranger Things and how things wrapped up in season 5. When Fallon asked him directly about the fate of Vecna and the emotional resolution in episode 8,

In the Canadian phenomenon, Williams plays hockey pro Shane Hollander, and the series follows Shane's rivalry-turned-romance with Russian player Ilya Rozanov (Connor Storrie). As Fallon aptly stated at the start of the interview, "It's one of the biggest shows in the world right now."

The Tonight Show is quick break before Thanksgiving. NBC announced that its premiere talk show hosted by Jimmy Fallon will air a rerun on Monday. On Nov. 24, the show will re-air the episode with Rosalia and DJ Khaled that originally premiered on Nov. 16.