One: Do not brag to your friend about how well-endowed her brother is.
Two: Do not go back for seconds (or thirds).
Three: Do not let him see your muffin top or jiggly behind. And definitely don’t let him feed you cookies in bed. Cookies are bad. Remember that.
Four: Act like a damn grown-up and apologize for riding him like a bull at the rodeo. And do not flirt with him when he laughs at said apology.
Five: This one is crucial, so pay attention.
Do not, under any circumstances, fall in love with him.