Even funnier considering this was an ad-lib by Brad Dourif.
When Karen threatens to throw Chucky into the fireplace, causing him to spring to life.
"YOU STUPID BITCH! YOU FILTHY SLUT! I'LL TEACH YOU TO FUCK WITH ME!"
Andy tries to get Chucky to talk in front of everyone. When Chucky respond with one of the doll's catchphrases ("Hi, I'm Chucky and I'm your friend till the end. Hi-de-ho! Ha, Ha, Ha!"), Andy angrily punched Chucky in the gut.