Flynn is upset about not being able to score with a girl (the girl in question is twice his age, though) so he turns to Ty for help. Ty attempts to teach him to wolf-whistle. The first time, Flynn sprays a fountain of spit right in Ty's face. Cut to a few hours later, and Flynn has mastered the wolf-whistle, doing it to any woman under 40. One woman isn't particularly pleased and smacks Ty with her briefcase.
This little gem really sums up Henry and Flynn's relationship, and the delivery of it is hilarious:
Henry: Mock me now, but when I invent time travel, I'm going to come back and slap you.
Gunther and Cece's "relationship" in Hot Mess It Up, especially Rocky's amusement at it.
This Troper found The Bad Guy Wins ending of the episode Show It Up it be hilarious. It's set so that you'd think that Candy Cho's ploy to steal the spotlight from Rocky and come in first by having the envelope announcing the talent show winner torn up would fail. But... it doesn't. And to rub salt into the wound, Rocky finds out that it wouldn't have made a difference if the envelope hadn't been torn!
Rocky:Candy Stinkin' Cho!
The entire episode in which Rocky and CeCe meet Gunther and Tinka's parents.
In the Pilot Episode, a running gag throughout the episode is that Flynn is craving bacon. Finally, at the end, he walks in, slams a pack of bacon on the counter, and demands that the girls cook it now.
Teddy: If that Deuce kid comes out of this bag, I'm gonna scream. Deuce:(from inside the bag) All right, then I'll just stay in here.
In "Add It Up" when CeCe is gushing about how she's going to date Henry Dillon, her math tutor, who she thinks must be an older guy because he's in college, she says "I do hope he's willing to wait five years, because it would be totally inappropriate to date him now." Then he walks in and is an 8-year old child prodigy, prompting this line from Rocky: