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parietals

1) Latin derivative for "wall".
2) Stupid system banning a person from the oppostite sex's dorm. Enacted mostly by Catholic universities, i.e. Notre Dame.
"It's midnight on a week day; parietals have started. Get the women out of the room!!!!"
by mut3 March 31, 2005
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parietals

You ask for parietals if you want to have a MOS in your room. Parietals is not the act of banning them from your room, it is the practice of asking permission, and, at some places, leaving the door partly open (with a shoe or something.) It does not START at midnight.
female boarder: hey, you want to come up to my room????
random guy: um, ok, but shouldn't we ask for parietals or something? Don't want to get in trouble.

"It's not the groping that goes on behind closed doors that I worry about-- it's what goes on behind the open doors that bothers me!"
by bandcampgirl183 September 27, 2005
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parentals

"your parentals calmed down yet?"
by lizzy June 8, 2004
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parentals

Parents; short plural form of legalese "parental unit".
Can't make it to the party on Sunday, my parentals grounded me.
"I like to whine and hit my parentals, I must be Emo" -- Hollywood Undead, "I Must Be Emo"
by Zwentibold February 28, 2008
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peristalsis

Rhythmic visceral muscle contractions in the digestive system that function to transport ingested materials caudally, unless stimulated by the emesis reflex where the flow of digested material is reversed.
Dude, last night Veronica's peristalsis was inhibited by my massive cock.
by CheesyBear November 7, 2014
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reverse peristalsis

An inaccurate alternative term for regurgitation or vomiting, typically used by grade school science teachers who don't actually understand science and use the urban dictionary instead of a competent textbook to source classroom material.

While reverse peristalsis in the small intestine can occur during vomiting, the actual act of vomiting does not involve peristalsis.
The technical term for vomiting is not reverse peristalsis it is regurgitation.
by MrScience April 25, 2011
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reverse peristalsis

n. the act of vomitting. (Peristalsis being the sequence of muscular contractions that moves food down the esophagus, the reverse of which would bring food up the esophagus.)
Sam drank too much. He's in the bathroom engaging in reverse peristalsis.
by Android March 9, 2005
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