What they should do is broadcast a sinewave sweeping from 10 to 20 Hz; Vary the amplitude and the sweep rate for extra fun. The average human stomach has its resonant frequency in that band. The Palis will get nauseous as the sound shakes their innards. It should even be possible to mix it in with the shrieking they're playing now.
She plugged it into a wall socket, turned it on and smiled sweetly as every man in the room grabbed his crotch and hobbled quickly out the door. The sucker put out some sort of low frequency sound which relaxed the adult male bladder.
But it only worked in enclosed rooms.