The other day I watched this older geriatric man walk away from the smith machine not removing any weight, which he had set up for shoulder presses, he went and began to do calve raises on another machine.
He was Doing calves for 5 mins, as the girl came over stripped off all the weight he had left on the smith machine. She was 2 sets into her front squats when fat man ran his fat ass over and said "I wasn't done with that yet, I have one more set."
There was another empty smith right beside him, which he seemed so declined to using. She was so pissed off she just laughed at him, and moved over to the next smith and put her weights back on and began doing front squats again.
10 mins later he was still sitting there "resting" for his last set of 2 plates per side, 2 reps of literally 3 inches of movement.