The lick made her tremble.  It felt wrong, but the subtle chiming of her bell was accompanied by the increasingly familiar rush of shameful arousal.  Her hips shifted slightly, restrained by her fear but spurred by the stroking.  She could feel the hard nozzle move, the fan of breath across her rump - and then a warmth invading her.  It was an alarming sensation, fluid and full as it swept down and around her colon.  She gasped, feeling her insides tense in anticipation.<br/><br/>Still, it kept coming, Gerlinde kept rubbing, and Lisle started hunching in time with the strokes.  It was<em>too</em>fluid,<em>too</em>full - she felt like she was going to burst!  And all the while, her sensitized clit was sending electricity through her sex.