You come home and your sweet and somewhat giggly girlfriend has something to tell you! I fucked your best friend while you were at work! Isn't that funny? Its sort of your fault for being late! He is such a good friend for fucking me in your absence. Plus - he fucked me better than you ever could. Thats right, your best friend fucked me like a real man. And of course, his cock was much bigger and more satisfying.