Under her toes.

Selkine massages your cock thoroughly with the balls of her foot, from top to bottom and then back up, pausing when she finds the point where you groan and shiver. She gazes at you, parting her lips, extending her tongue and licking the tip of her index finger. Then she slides her index finger between her lips, drawing it in and out of her mouth in slow, exaggerated motions.

You can't stand it. You push your hips toward her foot, and she pushes back, stroking, rubbing. She takes her finger out of her mouth and starts to whisper encouragements. "Oh yeah...mmmm...oh baby yes..."

You sit up straight the moment you realize your climax is coming. You mutter something incoherent and spread your thighs wide, giving yourself up to the insistence of her toes. The last wave rises up gradually over you and then crashes down as your cock bursts and spurts.

She presses firmly, but not too firmly, milking your orgasm one squeeze at a time until you're all over the sheets, and her foot, and your own stomach. You can breathe again, and you take deep gasps, bracing your hands on the bed so you don't fall over. Eventually you've given up everything you had, leaving your cock spent and throbbing under her sticky toes.

She gives a happy sigh and releases you, letting your cock sag. "That was fun," she says, and all you can do is nod.