Anyone know of some good pranks I can pull on my friend Mitchell?

He keeps pranking me, which started in school with a BLANK_SPACE prank over iMessage, and since then, he keeps pulling these stupid pranks on me. I tell him to stop, but he says "I Cinta pranking u!!" If anyone knows any good pranks I can use as a payback prank, plez tell me!! I just want him to stop!!! And right now, he's continuing with "The Struggle Is Real Prank" he never seems to stop, someone plez help me, I'd really appreciate it!!