Caverns of The Slith
When having sex - at least in the 'doggystyle' position - they'd generally curl their tails up along their backs where they wouldn't get in the way, but the broad base of the tail prevented the kind of buried-to-the-sheath penetration anitra was enjoying right
Rest and Relaxation
All in all, he wasn't penetrating any deeper than the apocalyptic stallions had done without going past their radial rings - but she'd never experienced a sheath penetration before.