What are ways to stop them from trying to pee on a chest or throw their pet at the enemy or eat a wall?
closed as unclear what you're asking by Southpaw Hare, doppelgreener♦ Mar 29 '18 at 15:40
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
If you're having a serious problem with one player ruining play for the entire group, perhaps you should sit down and have a talk with them about it before a session. If they refuse to listen, it's always possible to replace a single player, but if this is a recurring theme with all of your players, then perhaps you should consider running a comedy-style campaign instead of preventing everyone from enjoying the game in the way they want to.