Because they have to use their Endor voices.
He used a Luigi Board.
One. They're used to having their lights knocked out.That joke turned dark fast. I'll see myself to my respective corner.
Build a house next to it.
Electricity.
Two. One to change it and one to yell "Ta-daa!" when he's done.
Timbuuuuuurrrrrrrrton!
An Endor Pool!
Ewoks
They have to use their Endor voices.