Try to ride your bedpost.

From Create Your Own Story

Your eyes travel to the large, spherical bedpost. It's easily 5 inches in diameter and its protrusion reminds you of a good, fat dick.
You crawl over to the bedpost and carefully position yourself directly over it, your legs spread and your pussy dribbling juice down your thighs.
You put the laptop on the bed and keep the porn running. Taking a deep breath you...

Rub your clit against the post
Start humping the post
Lose all control and start fucking the post at full strength