This emote is shown to be part of the Membership Loyalty Pointsupdate and was featured in the Jagex Youtube video promoting the update. When performing the emote, the player rolls on the floor or ground and laugh. Nevertheless, while your character laughs you can hear his/her voice.
Trivia[]
According to the anime Yu-Gi-Oh! Duel Monsters in episode 27, the laughter is from the Deranged Rabbit monster.
This emote is used when talking to a Barrows Bobblehead when selecting the second option when they want you to fear them.