What five-letter word become...

A husband and wife were in the bathroom getting ready for work when the husband looked at his wife and said, "I gotta have you!"
He backed her up against the bathroom door, pulled down her panties and ravaged her. He knew he was doing great because she screamed and wiggled more than she ever had before.
When he finished, he started putting his clothes back on and when he noticed his wife still writhing against the door he said, "That was the best, honey. You've never moved like that before, you didn't hurt yourself did you?"
His wife replies, "No, no. I'll be OK once I can get the doorknob out of my ass."