She waits till you finish.

There is a moment or two of silence as you wriggle in her lap, hips bucking spasmodically as your cum seeps out through the now soaked panties.

Finally spent you lay slumped across her lap, breathing heavily and feeling the spreading sticky wet patch between your legs.

As you recover your senses your cheeks turn birght crimson with shame. You've just cum all over her lap! From being spanked for dirtying her daughter's clothes. Fearfully you turn slightly and look up into her eyes.

Her eyes show a mixture of lust and anger which makes you cringe in embarrassment and fear.