Our boss told us that it's gonna be a hot one today. He told us water bottles are not allowed on the warehouse floor. He told us we could go get water from the water machine in their office. He told us not to take the piss.

Yes. The man sitting in the air-conditioned office who goes through 4-5 cups of tea across a 12 hour shift is telling the people who can't access water not to take the piss. Indeed.