Ron: The Diablo toys are EVIL!(The entire gym full of students at prom stare at him)
And of course when Ron and Eric have their first conversation about Kim:
Eric: So you know her?
Ron: Ch'yeah! We're tight!
Eric: Hooked up?
Ron: Ew, no. We've been best friends for like ever but not like that, she's...
Eric: Oh, I get it. Extreme steam.
Ron: Ooookay, let's not talk about her that way ever again, mmkay? 'Kay.
Earlier in the mall when Bonnie was trying to imply that Ron and Kim were together to Eric, Monique steps in:
Monique: Is that Brick out there hitting on the girl from Earring World?
Bonnie: (runs out of the store) He is hypnotized by her big hoops!
and the alarms going off as she runs out.
And of course, Dr. Drakken's involvement in the hilarity:
Drakken: (to his henchman who is studying teen fads/lifestyle) Stevens, status report!
Stevens: What up, Dr. D-Diggity Dog?
Drakken: (sadly) We’ve lost Stevens.
The treehouse scene is golden.
Ron: Talkin’ about Eric? Pff! AH, NOOO! Why would I have a problem with Eric? AH, NOO! I’m down with Eric! (hyperventilates)
Not to mention after Eric shows up below them:
Ron: He CAN’T come up here.
Kim: (frowns) Ron…
Ron: No, I mean like he really can’t come up here. This treehouse has a weight limit and while I’m holding this slingshot, we’re already pushing it.
(Followed by the scene of Rufus putting down the last nacho he was about to eat).
Then of course there's Ron's epic freakout at Bueno Nacho. Ron is wedged by the corner of kids begging for the Diablo toy and he snatches the reporter's mike and yells at the camera
(Ron is wedged into a corner by the horde of kids at Bueno Nacho) Reporter: I'm here at Bueno Nacho, where this huge throng of kids is begging to get this new toy little Diablo, where— Ron (snatching the reporter's mike): I can't even get to the counter to order! THIS USED TO BE MY PLACE!! MINE! I'M LOSING EVERYTHING I EVER CARED ABOUT!!! Jim: Ron's on TV! Tim: And he's freaking out! Dr. Ann Possible: Honey, I think the boys are right. Dr. James Possible (looking up from his newspaper): Ronald? Freaking? [looks at the TV, seeing Ron being dragged out of Bueno Nacho, wrestling with the reporter over her mike] Haha, so he is!
The second freakout is almost as hilarious as the first!
Ron: No…it can’t be…NOOOOOOOOOO! (marches up to counter, shaking a straw in his hand) THIS IS THE LAST STRAW!