What is up with the older couple resting in the bathtubs in Cialis commercial?

[Nicholas H]

I am wondering if anyone knows what is up with the older couple resting in the bathtubs at the beginning and end of the Cialis commercials. I understand them resting, watching a sunset, but why are they sitting in bathtubs rather then a beach chair or something? Why not in a gazebo or a hot tub as opposed to a regular tub? NE1 got a guess? I am open to any answer.

[Nightrider]

Don't you get it?
They started taking bath together.
They did it - yup because of Cialis.

You see, older people have this problem getting erection and keeping it on. Then to have ... hmmm... hmmm... you know........ is even tougher.
(You will understand it, when you get old).

So, they continue where they left off with taking bath after..... hmmmm...hmmm.... you know......

Get it now.?

So the commercial goes on to say, it is because of Cialis. That's all there is to it.

I can't explain it further. Oh, I am blushing, and embarassed.