We're at a mutual friend's party, and I've been coyly catching your eye all night. Once we're both a little tipsy, I lure you into a back room and confess that I want, I NEED, your cock. You're incredibly turned on by my confessions but a bit hesitant, since you forgot to bring condoms tonight. "It's ok," I laugh, starting to strip off my clothes. "I've been on the birth control pill for years. There's no chance at all of your sperm fertilizing one of these eggs." You're still unsure, but you just can't resist my sensual teasing. I'm naked now, straddling you, and then I slowly slide your achingly hard cock into my wet, horny pussy. Once we're both close to orgasm, I lean in and confess, "I was lying. I'm not on the pill--I've never taken birth control in my life." I grab your torso and start riding you faster, harder, moaning with every thrust. "You're going to give me your seed, your cum, and pretty soon we'll have a baby growing in this belly..."