Changeover by Duane Davis

'Al kept going to sleep in the beds of various girlfriends and waking up somewhere else. Then there
was the expensive gun he bought - one minute he had it, the next it was gone. He had to find out what was going on r go nuts ! Most teasing of all was the freakish change in a certain delectable, desirable, delicious babe that he was interested in. For he found out that she hadn't always been a woman.'