Bubble knew that Jolly had an irrational fear of clowns. Jolly would never spill the beans as to why.
So Bubble took it upon himself to scare the life out of Jolly; safe to say Bubble didn’t like secrets.
He hid in Jolly’s closet and waited for Jolly to enter the room. As soon as Jolly walked in, Bubble threw himself in front of Jolly and watched the fear take over as Jolly sprinted out of the room.
Jolly vowed to get him back for this treachery.