Two from the same large project:
We had a mix of 60 and 100 watt bulbs on the temp lights. One of the journeyman sent a helper to the supply trailer for "Bulb Gell" to get all the bulbs the same brightness. You know, it comes in 5 gallon buckets or squeeze bottles and is pretty slippery. Yes we were pulling feeders that day, yes we did get our pulling lube.
I had a helper who spoke bad English, mostly the stuff he had tought himself watching TV. My other helpers tought him the names of all the basic materials we use every day, but they tought him wrong. 3/4 EMT connectors became M098jr F997rs, 3/4 EMT couplings were SOBs. Sending him to the supply trailer was priceless.