"Come and get it!" she commands quietly.
You lie on top of Jessica and she places the ice pack on her pussy and under your cock and balls. She then pulls you closer to her, in the exact position one would be in if one were having sexual intercourse. Except instead of feeling Jessica's moist and warm pussy, you am now rubbing against a bag of ice.
Jessica begins to kiss you passionately, enjoying the fickle nature of your situation. Enjoying trying to arouse you knowing that the ice pack is shrinking your cock. Which it is. Your erection quickly dissipates from the icy cold pack. Your cock is now shriveling up and shrinking rapidly.
Jessica takes a look...