Never have sex with anyone again, including yourself and be locked in chastity pants for the rest of your life, or be able to have sex with anyone you wanted, whenever and wherever you wanted, but every time you reached the point of orgasm they had to do a poo in your mouth?
The poo thing, and I'd pick Rebecca Ferguson (actress, not highly strung Liverpudlian X-Factor) because I bet her poo tastes of Galaxy chocolate.