Noun. Don-ka-looch 1. Overgrown Jewish man. A donkalouch can typically be identified by one or a combination of the following characteristics: awkward dance movements, attracts swamp girls no better than a 6, hits golf balls backwards, easily confused with Godzilla, bald, pale complexion, always 'forgets their wallet'. A donkalouch is indigenous to Northern New Jersey and only comes out at night when it's time to hunt, feed and mate. The donkalouch's mating call consists of yelling 'lets go' and tossing napkins in the air.