A very brief, very faint mention in the newest episode where Tom's wife meets Usher. At the end of the first scene, as she's leaving the restaurant with Usher you can hear their dialogue in the background, and towards the very end she titters, "I'm ticklish!" He says something like, "I'll tickle you again." The whole way leading up to that even she's giggling up a storm, for those who enjoy that as well.