In a pinch , put it in a Blender or smoothie maker or food processor , Pulse for 5 secs stop pulse again over and over until it looks close to what you'd normally expect a crush to look like .
Pulsing is to ensure you don't burn out the motor and also stops from burning the starches as the grain starts turning to flour .
PITA takes ages, leads to a gooey mash , doesn't provide a good grain bed for your runnings, and isn't as efficient .
But , you'll be able to make beer with it .