He's right, totally right. And probably you wouldn't go too far. "ALl right kid, show me how you do it. But careful, if I don't like it, you'll join her here" You say while poking your oversized belly. "I won't fail." "Yeah yeah. insert it in my ass before you cum" "I-in your ass? Really?" "Of course, I won't get risk getting pregnant"
After this, he runs towards you and reaches your ass. You lay on your belly to make his work easier. He grabs your ass cheeks while feeling the softness of it, getting even harder at its touch. You feel his rod entering your ass and moving back and forth a couple of times before cumming. "OMG" "Wait, is that all?" "No,no,no" "Well, what are you waiting for?"
He starts fucking you again while you press your hands against your belly to help it melt the teacher. 30 minutes later, he cums a last time and falls to ground, passing out. "Are you already finished?"