The woman backed off and the man parted his legs and raised his knees. She went down and began kissing and licking his sac. She took a ball into her mouth and sucked. Then she pushed that testicle out and sucked the other one into her mouth. The man stroked her head, her dark hair, and squirmed his buttocks against the mattress.

"I'd forgotten about this swapping wife liking to tongue assholes," Betty whispered. "She'll be giving him a good reaming soon!"

Betty had hardly finished giving the information before the woman was performing analingus upon the man. Stacy had seen pictures of the intimate oral act being performed, as she had seen pictures depicting just about every sex act imaginable, but she'd never even seen a hard cock in the flesh before. She felt that she should be disgusted with the woman, and with herself for getting a strange kind of thrill from watching, but she wasn't. She'd read that anything a man and woman did sexually to give each other pleasure was perfectly acceptable and she certainly wasn't qualified to argue with the so-called authorities.

The man had pulled his legs up until his thighs were touching his chest. The woman licked all over the anal region in ever smaller circles, getting closer and closer to the puckered asshole. Stacy had a perfect view, as did Betty, and Stacy heard Betty give a little gasp as the woman jabbed her tongue against the knot.

"She has her tongue buried at least two inches in his asshole, Stacy! You can bet your beautiful butt that he's enjoying it! I've had my asshole reamed like that I'm telling you it's a wonderful sensation!"

Stacy wasn't surprised or shocked by Betty's words. Or confession. She knew that her comparatively new friend had been around plenty. That was one reason she'd been so helpful in cultivating the friendship. She'd been, and still was, tired of just reading about sex and looking at erotic pictures and masturbating.