Mistah Tony had a much funnier take on this yesterday, but good lord ...

The most common side effects with Cialis were headache and upset stomach. Backache and muscle ache were also reported, sometimes with delayed onset. Most men weren't bothered by the side effects enough to stop taking Cialis. Although a rare occurrence, men who experience an erection for more than 4 hours (priapism) should seek immediate medical attention. Discuss your medical conditions and medications with your doctor to ensure Cialis is right for you and that you are healthy enough for sexual activity.

I'll bet a lot of guys won't consider that much of a deterrent. "Backache or a four hour wood ... roll the bones!" Time to buy some Lilly stock ... or, hey Dan, think we could hop that wall down on the southside?