Babysitting never paid very well, but, when my boyfriend and I got caught naked on their sofa by the couple I was sitting for, well, they decided to begin paying us extra to watch us make love to help spice-up their own sex and that was when I saw what her husband had in his pants. Then they asked us if we would like to have sex with them. Oh, I haven't been the same since I first felt him inside. I've learned two important things from then, one, how wonderful a big one can feel and how wonderful lovemaking with a woman can be.