"Push-ups"

You declare as you drop your shorts. Alex looks at your hardening cock.

"Very well."

She lies down on the grass and looks up at you.

"Give me twenty. I want your cock fully erect at the end of this and I expect you to hold each push-up three seconds in my mouth. I will tighten my mouth around your dick as you hold and loosen when you should release. If you have the arm strength, you will really enjoy it. If you cannot hold, you run the risk of your dick being scraped by my teeth."

She smiles a slightly scary smile. The other members weren't kidding when they described her workouts as full on!