Pulsating Humor

My pulse has always been low. As a matter of fact, it was 46 at my last checkup in June. My doctor isn't particularly worried, yet as with so many other things as we age he wants to 'keep an eye on it'. "So when do we start to get concerned?" I asked my MD.

"If it gets to 40 or less."

"Ah," I responded, "At that point we have to 'pump' my heart up?"

The doctor stared at me for a couple of seconds, then blinked once and said, "I have other patients to see, Mr. Cosgriff."

Hey, come on. It's clever.