A design of Bra where the cup is cut away to allow the nipple/aureole area to be exposed whilst providing support the the breast, ideal for the fuller bust or for appearing to be wearing a sensible brassiere under a formal suit.
Susie loved her open-cup bra it gave her that softly erotic ' I know someting you don't feeling.'
Sammie was shy about her saggy breasts go without a bra, but her open-cup bra allowed her to 'show pokies' at the mall.
Sammie was shy about her saggy breasts go without a bra, but her open-cup bra allowed her to 'show pokies' at the mall.
by Townsman December 30, 2014

It's simple enough, if you seal up the leaks, your relationship will be airtight again, it wont be open.
Not everything needs to be loosened in life, things fall apart that way. An open relationship is one of them.
by Solid Mantis October 7, 2020

An advanced sexual act, in which the male inserts himself from behind, and then does a cartwheel. imitates the motion of a vault door opening.
keep out of reach of children.
keep out of reach of children.
guy 1: man, me and Chrissy got frisky yesterday, ended up trying the vault opener. It ripped my dick off, but other than that it was quite nice.
guy 2: ... Isn't Chrissy the name of your dog?
guy 2: ... Isn't Chrissy the name of your dog?
by DestroyerOfWomans November 10, 2020

For men: a thirsty call for noods. Like a baboon makes its butt more red to attract a mate. The Kik male uses “PM open” in their username and usually a torso to try and lure women in for the noodles.
For women: a risky move on Kik. 83% of women with “PM open” are actually males (see above) which make the other 17% just wanting some deep.
For women: a risky move on Kik. 83% of women with “PM open” are actually males (see above) which make the other 17% just wanting some deep.
by Deepration July 21, 2021

A term borrowed from engineering meaning that something is uncontrolled. In engineering, feedback is fed back into the input of a system to keep the output under control.
When a person has nobody to check their behavior, they are said to be "operating open-loop."
When a person has nobody to check their behavior, they are said to be "operating open-loop."
My kid was running open-loop at home while I was in Asia. Surprised the dog was still alive when I got back.
by FirmwareGuy June 6, 2018

Dude...I really liked this girl but can't be around her anymore now that I gave her a British Open. Why would she risk asking me to buck in her mouth??
by Smitty' Titty's May 10, 2018

A girl who dates a guy,who immedately after they break up becomes or tells everyone that he is actually gay.
by Mattiswhack69 April 10, 2011
