In her ass.

"JEEEEEEEEEEEEESUS!!" Penelope screams as she starts to cum hard all over her hand "FUCKING CUM IN ME!!!"
You arch your back and with one thrust you shoot your hot load all inside her sweet ass.
"OH FUUUUUUUUUUUUUUUUCK!" she cries.
Drop after drop of your juice is swallowed up by her willing hole,her ass muscles tight around your now spent member.
You slump over her back both of you spent and breathing heavily.
"Well" she say's when she's regained some breath "Do we have a deal?"