Also in that episode, he accuses the old lady turtle of being the criminal mastermind.
Dudley:YOU'RE GOING DOWN, GRANDMA!! [the old turtle faints]
"Oh no! SOMEONE'S STEALING CIRCLES OF ICE!!"
When The Chameleon throws a canister of helium at Dudley and Kitty, the former after inhaling it jokes that he's "Tiny Dudley", and he lives in a thimble and eats mini mini waffles.
At the end of "Watch Dog" Dudley uses the watch one last time to catch the ice cream man. He succeeds, but finds he's now wearing a pair of jeans and has no idea how they work.
"Sorry, [insert character's name]. Or should I call you... THE CHAMELEON??" (hitting whoever with Kitty)
"Stop using me to hit people, Dudley! Or should I call you... THE IDIOT??" (Kitty bangs Dudley's head)
"No, Mr. I-only-have-one-idea-and-I-keep-repeating-it-!"
The Really Big Mission episode, where The Chameleon turns into a cup holder. "Yay, I'm helping!"
"Who puts tiny scorpions in a pen?!"
Dudley drilling a hole through the Earth, causing it to emit a whistling sound as it rotates.
The Chief trying to hit Dudley with the "Fist-In-The-Box" only for him to miss, and the fist to rebound off of the walls and knock a shelf full of anvils on him.
The happy song. And the "no singing" rule.
In "Quack in the Box", Dudley throws a ton of greasy fast-food resturant boxes on the T.U.F.F. agents.
Important people getting thrown out in "Dog's Best Friend".
Keswick: That was my ticket out of this freakshow! I mean, I was gonna buy you guys a beach house.
If you pause Snaptrap's Dance Acadamy letter, it reads: "Dear Verminious, we would like to offer you full scholarship! Ah Blah Blah Blah blah yadda yadda yadda yadda yadda blah blah blah blah blah blah blah."
"Pup Daddy" reveals Keswick's evolutionary cycle, where when he gets hit by his youth gun and ages backwards he enters his teenage years and looks the same as he always does, except he has an ink-secreting spiked lizard tail which he claims will eventually break off and become another Keswick and they'll fight to the death. His child stage is a platypus which shoots barbs when he hiccups, his infant stage is a tadpole, and when he gets hit by the ray after Dudley puts it in reverse his senior stage is a jellyfish.