[s6e23] The Understanding Here

Just as the police are about to arrest the parents, Peter gives an impassioned speech in his usual gibberish. Although the officers cannot understand him, they are so moved by his "tone" that they let the parents go free. The Donut Sheriff adds that the files they destroyed are already backed up on the internet anyway.

Realizing the Pepperonis have no idea what the internet is, Gumball and Darwin are forced to have Peter explain it to them in his own unique language, starting the cycle of misunderstanding all over again. The Understanding - The Amazing World of Gumball Wiki [S6E23] The Understanding

This strategy backfires when they meet Peter's parents, the Pepperonis. Believing Gumball and Darwin finally "understand" their son, the parents invite the boys to an event. Darwin assumes it is a birthday party, but the family instead drives to City Hall. Just as the police are about to arrest