At 85 years of age, Wally married Anne, a lovely 25 year old.  

Since her new husband is so old, Anne decides that after their wedding she and Wally should have separate bedrooms, because she is concerned that her new but aged husband may overexert himself if they spend the entire night together.  

After the wedding festivities Anne prepares herself for bed and the expected 'knock' on the door.  

Sure enough the knock comes, the door opens and there is Wally, her 85 year old groom, ready for action. 

They unite as one.  

All goes well, Wally takes leave of his bride, and she prepares to go to sleep.  

After a few minutes, Anne hears another knock on her bedroom door, and it's Wally.  

Again he is ready for more 'action.'  

Somewhat surprised, Anne consents for more coupling.  

When the newlyweds are done, Wally kisses his bride, bids her a fond goodnight and leaves. 

She is set to go to sleep again, but, yeah, you guessed it..... Wally is back again, rapping on the door, and is as fresh as a 25-year-old, ready for more 'action.'  

And, once again they enjoy each other.  

But as Wally gets set to leave again, his young bride says to him, 'I am thoroughly impressed that at your age you can perform so well and so often. I have been with guys less than a third of your age who were only good once. You are truly a great lover, Wally.' 

Wally, somewhat embarrassed, turns to Anne and says: .......'You mean I was here already?' 

The moral of the story:

Don't be afraid of getting old, senior moments can have advantages.