HEADCANON TIME:
So you know that episode where Finn wants to take PB to the couples movie night so he calls Marceline for help? Yeah well I think that Marcy got a bit jealous so she told Finn to do the things that she knew would annoy PB (tackling her/chasing her with wolves/etc.) and she knew what to do because when they were dating she used to do stuff to annoy/scare PB just for fun.
#bubbline #Marceline #PrincessBubblegum #AdventureTime