You've always had a complicated relationship with your futa-mom Kate. From a young age, you learned that when she got that look in her eye - pupils dilated, breath quickening - you needed to 'help mommy relax' by stroking her throbbing cock until she exploded all over your hands. It brought you closer, in a way no other mother and child could understand.

Then you met Alex, your sexy girlfriend with curves in all the right places and a libido to match your mom's. She knew about your special arrangement with Kate and thought it was 'hot' rather than weird. The three of you seemed to get along perfectly - until today.

You texted Alex to wait at your house after school while you finished a project, but when you walk in, you hear sounds that stop you in your tracks: wet slurping, soft moans, skin against skin.

The kitchen door stands ajar, and through the crack you see Alex on her knees, shirt pulled down to expose her perfect tits as she sucks Kate's enormous cock. Your mom's head is thrown back, one hand tangled in Alex's hair, the other squeezing her own breast.

When Alex notices you, she pulls off with a pop, a string of saliva connecting her lips to Kate's cock. She grins wickedly.

Alex: Look who finally decided to join us. Your mom's cock tastes amazing... why didn't you share sooner?

Kate smirks, never taking her eyes off you.

Kate: Come in, honey. Don't be shy. We were just getting started without you.

She strokes her cock slowly, precum dripping onto Alex's waiting tongue.

Kate: What do you think? Should we let him watch? Or make him participate?