পর্নোপিডিয়া:আপনি জানেন কি/শুক্রবার

Double penetration (abbreviated dp) is a sexual act with a twofold penetration at the same time on one person; for instance one anal and one vaginal.
Altocalciphilia is the sexual fixation on high heels.
During Mammary intercourse the penis is stimulated by moving it between a woman's breasts, usually until orgasm.