Fitness Ball sex?

[5ironfrenzy]

Has anyone ever tried having sex on a fitness ball? Was listening to a radio show today and a lady caller called in saying how great it was. Just wonder what the best positions are.

[novicebb]

Never tried this at all but I do have the strong desire to have sex in a gym on the right after a demanding workout with a girl ofcourse. Like you are sweating and muscles are sore and you two look at each other and see how sweaty each other are and then go from there.