Finish in his unwilling mouth
From Lord Of Utterdom
You grasp the sides of his head and buck wildly, your cock pistoning into his mouth like a battering ram. He grunts and gags around your member as you release your seed deep beyond his lips, spattering the back of his throat.
Finished, you pull yourself free and push him back into the hay. He coughs, gags, and retches onto the floor of the stable.
"Clean that up before you leave," you say, fastening your britches and heading back out.