Forbidden lesson

I once met a woman who was addicted to sex,
She wanted to fuck even when I wasn't erect.
I mean I wanted it too but not twenty four seven,
This woman taught me a very sexual lesson.

From dawn to dusk all she wanted to do is fuck,
After a week I felt as if my body got hit by a truck.
All day and all night we did nothing but screw,
I had to take Viagra even though my balls were blue.

I tried to leave but before I could she called my name,
"It's time to fuck" she said,"come run this train!"
My eyes widened in horror as I seen her older sister,
"We want you to fuck us both" with voices so sinister!

Two woman spread eagle begging for me to fuck them,
Every mans fantasy but for me I wanted this shit to end.
I had no choice but to pop another pill for the next session,
One girl sat on my face and the other gave my cock affection,

The moments passed with loud cries and moans of release,
My tongue was beyond rigid as her sister climaxed with ease.
I glanced up and seen the other girl riding my numbed cock
I couldn't take no more but I knew that they weren't ready to stop!

I told them that I was done and that I couldn't fuck no more,
My body was tired and my cock and balls were friction sore.
They laughed at me and said that they weren't leaving yet,
"You made the wish to be a forever slave to sex!"