Operation: Squeeze Toy 
Sex Dictionary: D
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daisy chain: A group sex activity in which there is a linking of several people by oral connections
dental dam: a piece of latex placed over the vulva during cunnilingus to protect both partners from STDs
depilatory: Something that removes hair from the body, usually cream
derriere: The buttocks
diaphragm: a dome-shaped cap of rubber designed to cover the cervical opening and prevent sperm from entering the cervix
dildo: an artificial penis used in sexual activity
Dirty Sanchez: During sexual activity, when the man inserts his finger into the woman's anal cavity and then smears the fecal residue onto her upper lip to form a thin Mexican shit mustache. She now resembles someone named Dirty Sanchez.
double bagging: Wearing two condoms at once. NOT recommended as added friction can cause a higher instance of failure.
douche: (pronounced "dewsh") The act of a woman cleansing her vagina with water or some solution. Research indicates douching causes a higher risk of Pelvic Inflammatory Disease and is not necessary because the vagina is self-cleansing.
douche bag: Derogatory term usually used to describe nasty women
drag queen: Male who dresses in female clothing
dry fuck: Moving against on another, clothed. To simulate intercourse
dyke: A lesbian