"Don't let the jellyfish sting you!" I think this would be a simple & fun game for a Nemo, ocean, Under the Sea, or Octonauts party. --So maybe a drinking game? Or a fun cute game to get a prize? Idk, give it some twist?
Express: "Tom Hiddleston 'p****d over' Tom Hollander after jellyfish sting on The Night Manager set." Link: http://www.express.co.uk/showbiz/tv-radio/647952/Tom-Hiddleston-peed-on-Tom-Hollander-jellyfish-sting-The-Night-Manager-Jonathan-Ross