The line comes from Kids A-Z, home to characters Bonk, Cuke and Uzzle. In this particular story Bonk becomes jealous, hurts Cuke and Uzzle's feelings, and must learn to be kinder to Cuke. The clip isolates his suspicious question, which creators pulled out of the lesson to use as a meme. It sticks around because jealousy is a universal feeling, and hearing it in a childlike voice makes an awkward emotion easier to joke about in short videos.