Libido problems

A rather strident woman drags her sheepish looking husband into the doctors and proclaims.

"It's him!, he's not doing his duty in the marital bed. When called upon to perform, he's Mr. Floppy with a capital F"

"I see" said the doc to the woman. "Can you go behind the screen and take all your clothes off?"

She does as she's bidden then pops out from behind the screen.

"Thank you" said the doc, "You can get dressed now"

Turning to the husband, he whispered.

"It's okay, there's nothing wrong with you. I couldn't get a stiffy either"