Sky hook
Classic apprentice hazing ritual, widely recognized
1) In construction work, it is one of the initiation rites of passage given to all new apprentice workers, and thought to be very funny by senior workers in on the gag. see also - rock stretcher, 68 volkswagen water pump, double pump conchitchilator with a two stage cadisafossil
The foreman just sent that new guy out to get the sky hooks, he'll be right back.