Geezers 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...."