Another pathfinder quicky
Hush Brd 0, Wiz/Sor 1, Clr 1 Standard Action Verbal Somatic Range medium. You raise you finger to you lips and blow making a shiss noise. One target makes a Will saving throw. If they fail, target can not speak for 1 round/caster level. Target can still move and may make noise in any other fashion
Throat Punch Games 