Doug borrows one of Judy's hats for a school project that Roger finds and decides to keep. Doug ends up being Roger's slave and has to avoid telling Judy what happened, as he had to sign a contract in order to borrow the hat. After being involved in a scheme to steal a plastic cow (It Makes Sense in Context), Doug finally admits to Judy that Roger has the hat and won't give it back. Her response?
Judy: Why didn't you just say so in the first place? (Walks off-screen to Roger) HEY! YOU! GIMME MY HAT BACK!! (Proceeds to slug Roger)
One comes from Beebee at the end of the movie. After Doug and Skeeter successfully get Herman, the Lucky Duck Lake monster, into the cleaner Crystal Lake, Bill Bluff begins threatening to make their lives a living hell before Beebee screams "DADDY! KNOCK IT OFF!" and proceeds to talk him into backing down and doing the right thing from then on.
You ever watch a show where a bully character or some nasty individual humiliates or otherwise upsets a character, and knowing you'd do so, practically beg the victim to punch the bully? Well, unlike most examples, Connie listened, and obliged.
To expand: Connie got invited to a party at Doug's house, but to hide a bad haircut she wore a large hat. Roger dared Doug to knock over Connie's hat, and when Doug couldn't bring himself to do it, Roger did. Connie is horrified, and while Roger is laughing his ass off (and was the only one laughing), Connie slugged him in the gut.