Bilbo arranges the entertainment for the Council of Elrond.
Bilbo: Right, "During your speech, burst a blood capsule in your mouth, and pretend your lungs have burst." Yeah, they'll all find that hilarious!
Okay, what else? "Ask Elrond to pick a card, and then fire the entire pack in his face, and while he's confused pull his stupid wig off and encourage the other members to laugh at him." Oh they'll all love me!