Natalie:
I almost feel guilty showing him your legs and ass. I tighten up down there when I see them. I'll bet he does, too.
Shelly:
Do guys tighten up down there, or do they just explode?
Natalie:
Maybe they tighten up when they explode?
Shelly:
Let's see. zero, you may NOT cum. Understood? That part of the experiment comes later - no pun intended. I want you to edge five times, though. Between the first and second edges, you may rest for sixty seconds. After edge #2, you may rest for forty seconds. After #3, you may rest for twenty seconds. Between edges four and five, you may rest ten seconds.
Natalie:
Isn't that reversed?
Shelly:
I'm the mean one today, remember?
Natalie:
Oh, yeah.