C'mon he's pulling your p*er. Don't you recognise a windup? I reckon he's installing air conditioning, so needs to cut those holes for the ductwork. Just puts a light in one of the cutout bits of plasterboard for a laff. Now look at the number of holes in the ceiling. And the ceiling rose that suddenly appears. Get my drift? Still, it's a good laff.
He has gone to a lot of trouble for a wind up ? cables hanging out of holes etc. Let's nominate him for MUPPET of the YEAR !!