ive heard you can trip off expired painkillers, and i unintentionally did it once last year, but i only like snorted two vics and popped a third, but still it was a wild body trip, i was awake but thought i was dreaming kinda shit. anyway my friend has 400mg of liquid percs (5mg is the recommended doesage for pain) does anyone know how long you have to wait before you really trip balls on the shit?