At a plumbing shop I worked at we would always make up a fake service call for whoever was on call during the christmas party. One year the on call phone rang and the call was a warranty leak on a pvc pipe on a hot tub in a mobile home in a town 30 miles away. He laughed and laughed. Yep, it was real. The resident had medical reasons to use the hot tub and needed it repaired at night.
When I loaded trucks and had a beam longer than the trailer we would send the new guy to the tool crib for the trailer stretcher.
One smart guy there always loved to tease people. I was late one day and he demanded to know why. I told him I forgot to put anti-freeze in my 64 VW beetle. He made an ass of himself teasing me about it for days before someone told him it was air cooled.