Gelling Joke

Your brother just finished running a marathon and is very visibly parched. His thirst definitely won't be quenched when you hand him a bottle of water mixed with this instant Gelling Joke! With this special trick gel, you can instantly turn a beverage into a totally non-edible sludge. Yes, it's mean to give sludge to a thirsty man, but the laughs you get watching him trying to slurp it down will be priceless.