* Connor- "Nice socks." Also sort of doubles as a CatchPhrase when mockingly dealing with authority.
* In the second book, a safe house for former tithes decides to put on a dance. Everyone just stands around awkwardly and doesn't dance, so the frustrated adult [=DJing=] decides that it's going to be mandatory for everyone to do the Hokey Pokey. About ten seconds into the song, he realizes that it's probably a bad idea to sing about individual body parts to a bunch of ex-tithes, and tries to jump to the "put your whole self in" line right away. The teens, however, find this hilarious and it actually serves as the ice-breaker for the party.
* Connor remembering his conversations with his tattoo while high in the third book.