What's your choice?

Alternate between her arse and throat

"I'll have your bum next," you tell the attentive girl, who responds instantaneously, straddling you and guiding you into her rear. The expression of utter agony on her pretty face as your meaty prick stretches her well-punished back passage is immensely gratifying, but no more so than the sensations of being massaged to the brink of climax by that skilled tunnel.

Skylark bobs up and down in your lap until you need another break and gently signal her to resume her oral ministrations. A few hours ago, this request would have produced a moue of disgust, but now the only emotion she demonstrates is her desperation to satisfy you, which is exactly what she does. You intended to swap ends a couple more times, but your enjoyment of the morning's torment is just too much and you soon find yourself spurting down your guest's swallowing gullet. You slump back with a sigh, whilst she makes sure you're completely clean with her tongue and then thanks you profusely for allowing her to give you pleasure.

Your job here is almost done and as sorry as you will be to say goodbye to the sweet blonde kneeling at your feet, you know there will be plenty more inexperienced teens delivered to you by parents eager to take advantage of your training services. Before she goes, however, it might be instructive for her to see how you chastise a grad student. After all, Bethany did fail to make her flinch when she was tickling her and there do have to be consequences for that.