Yami: You're watching Yu-Gi-Oh, when you could be doing something outside.
Joey: I can finally get that prize money and buy myself some new friends!
Yugi: What about your sister?
Joey: Right, I can buy a new sister too.
Tea: I'm glad Bakura's gay, otherwise we would've never gotten out of that cave!
Yugi: Hey Tea, do you remember the time we became friends?
Tea: No, but I remember the 4Kids version.
Kaiba (After Mokuba's kidnapping montage): I should probably keep him on a leash.
Joey: Don't worry, Yug. We're supporting you all the way!
Tristan: 10 bucks on Kaiba!
Tea: 50 bucks on Kaiba!
Yugi: Don't do it! What would Grandpa say?
Grandpa: Yugi, kill that son of a bitch!
Kaiba: I knew my emo strategy would work.
I thought the Kingdom Hearts II reference was pretty funny, too.