Fucking the Ground
Here's something that really makes me cum quick. Find a spot where you want to fuck the ground in your backyard or wherever; dig out a hole that fits your cock snugly; put a lubed condom in the hole and stretch it out over with something that will hold it in place; fuck the ground. It's amazing! My girlfriends watched me do this when I was about 15 years old and they all said it was the hottest thing ever!