Zac and Gumball are playing video games on the TV and Zac decides to speak up Zac: umm... hey dad? Gumball: yes? Zac: Here's something I can't figure out... I'm a fusion between you and mom right... she's and fairy or peanut that broke her shell right? But... Grandma Richie is a rabbit and Grandma Nikki is a cat... So... why aren't you a cat, rabbit mutant hybrid? Gumball's face goes from smiling to completely mortified Gumball: ... uhhh I don't know.. let's not talk about that He chuckles