Liz dives in

Liz leans closer to her daughter's sex. You can see a conflict of lust and reticence in her face. She looks at you as if for affirmation. You bite your lip as Emily draws another shudder from you then nod at her in encouragement.

Then, with whatever principals she had now discarded, Liz cranes her neck forward and sticks out her tongue to taste her daughter's forbidden fruit.

The tip of her tongue connects with Emily's clit and your friend freezes for a split second before groaning into your pussy. You aren't sure if she has figured out it is her mother licking her but when Emily gets back into it any reservations you might have had are dispelled by the pleasure she is giving you.

At this point Liz starts acting like a woman possessed, latching her whole mouth onto her daughter's sex, moving from sucking on her clitoris, to deep kissing her hole.

This lewd act is getting you off almost as much as your best friend's attentions. You've been slowly building up to a satisfying release, and then Emily disengages from your pussy to announce she is cumming.

So lascivious is the thought of this incestuous fucking that, for the first time in your life, your orgasm occurs without anyone, or anything touching you.

"OH MY GOD." You scream.

Emily hears what is happening and returns to licking your pussy, eating you through the orgasm to the point where it is almost painful.

When you finally come down from the high, you climb off her. Leaving Emily, panting, and staring down between her legs at her mom. A woman, currently covered in her own daughter's juices.