On her tits.

At the last second you pull your cock out of Penelope pussy,drop her legs either side of you and starting jerking all over her tits.
"OH JESUS" she cries as stream after stream of hot sperm shoots out of your dick "CUM ALL OVER MY TITS BABY"
Shot after shot flies from the end of your cock and splatters across her juicy tits,splashing across her nipples and running down her cleveage to pool on her flat stomach.
"Mmmmmmmmmm" she smiles as she wipes some of your cum into her fingertips and then lick it. "So,do we have a deal?"