Stroke your cock using the sperm as lube.
From Create Your Own Story
You smear his warm jizz over your engorged dickhead. Holy mother of God, that feels good. So slick, slippery, and sensual, you stroke your cock aggressively, feeling your balls tighten up and your cock just about ready to explode. Jughead leers lustfully at you, smiles and licks his lips, his erection still throbbing, encouraging you to come. You're so close now.
"Jughead? Archie?" his mother calls from inside the house.
Jughead leaps up and falls out of the hammock. "Oh, shit! She can't see us like this!" he cries.
Do you: