A couple of geezers were sitting on a bench

A couple of geezers were sitting on a bench outside the nursing home, having
a little chat. "How are you, Tom?" asked Marvin.
"I'm not feeling well today - utterly exhausted," Tom replied. "I pulled a
muscle and it's killing me."
"That pulled muscle shouldn't make you so tired, though."
"Well, it does if you pull it a couple of hundred times...."