When a guy and a girl have sex with a blanket sheet with a hole between them in order to avoid physical body contact.
Al:"River was so shy last night that she took a pink blanket and cut a hole in it. Then we had blanket sex".
Pinky:"That's weird. She usually likes hot and steamy sex. Have you waxed your chest?".
Al:"No, why?".
Pinky:"Now I see the reason why! River does not like the Amazon forest!".
by hotbabyface January 13, 2011
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When a girl or guy takes a blanket and sticks it in between their legs and acts like their having sex with the blanket, and thrust until they get "the magic". Orgasm noises can be included if the person wishes. It's a form of masturbation.
Abby: Do you masturbate?

Jenna: Ya, but I don't finger myself, I have blanket sex.
by iluvudictionary June 13, 2010
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An action occurring beneath a blanket that appears to be sexual in nature but is really mundane or innocent.
Travis and Allie were shifting conspicuously underneath the blanket but everyone knew they were prudes, so Dave deduced they were having blanket sex.
by SirHoneytoast October 16, 2007
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When a male or female feels uncomfortable having sex in someone else's house or apartment. They can only fornicate in listening distance of their parent(s).
Boy: "Hey baby, wanna come back to my apartment so we can have some alone time?"

Girl: "I'm not a huge fan of sleeping with you at your place, I would feel more comfortable with you pounding me in my parents guest room."

Boy: "Thats the room next to your parents?"

Girl: "I know" (wearing a very dirty smile)

Boy: "You definitely have security blanket sex syndrome, I should probably go look for someone else, but I think your hott so I'll be by in a little bit"
by brandyOnIce February 1, 2011
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A blanket that is used during sex to keep love juices from getting on your bed/sheets.
"You've forgotten the sex blanket, now there is semen all over your bed."
by Mallory and Zach June 7, 2006
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(N) a bed cover at all non-five star hotels
Sometimes referred to as a sperm blanket
Upon arrival at their motel, jack and nicole threw the sex blanket off their bed.
by aschluss April 4, 2010
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A blanket used for nights or days of marathon sex and or bedroom olympics . When nourishment is need for excessive caloric burn, popcorn is consumed.
You should of seen how many times I made her pop last night, on that popcorn sex blanket.
by GIRTHQUAKE72 November 7, 2019
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