Doorknob! Window!
When someone farts silent or loud, the giver must yell 'SAFETY' at the end of the exertion. But if anyone else calls out 'DOORKNOB' before the giver yells 'SAFETY'...then all hell is loose! Anyone and everyone is allowed to pummel the giver till he can reach a legit doorknob and make contact with it.
Also, if the giver belches or burps, the giver must yell 'SAFETY'! if anyone calls 'WINDOW' before the giver say 'SAFETY' then all hell is loose again. Same rules apply as with farting.
written by P *, approved by Susan