A one night stand that acts like your significant other, rather than a hit it and quit it.

Duties include, holding hands, sweet nothings, kisses on the cheek and meeting friends and family all on “first” date.

“One night boyfriend” is often followed by full hungover / drunk next day then to never hang out again.
My binge date last night turned into total one night boyfriend yesterday. We met up at Happy hour then he came to friends bday dinner and chilled all night long, had amazing sex then went to brunch with his friends. Fast forwards never spoke again
by Lykra Dranks May 27, 2019
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When you like someone who doesn't like you back or When someone likes you but you don't like them back.
Why do I always get asked out by guys that I don't like? And guys I do like, I'm always invisible. One-Siders, forever my life. :P
by Ryanne Renetier October 28, 2021
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Masturbation,one handly Eagerly Pleasing yourself
He's been in there for awhile, he's probably doing the one hand jam.
by Emazingjrow February 1, 2018
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While playing one's cards close to one's chest often refers to secretive behavior, it is nowadays being used as a euphemism for breast binding.

A lesbian or trans man may be referred to as someone who plays their cards close to their chest, especially when one is not sure what pronouns to use.
Oh, that's not a man, that's Hannah. She's got great tits but she's a butch and prefers to play her cards close to her chest.

That's Taylor, he can't play tag with us because he's playing his cards close to his chest and we don't want his lungs collapsing.

I saw Alex at the gym yesterday! It was pretty shocking because she usually plays her cards close to her chest but I guess she just uses a sports bra for working out.

Playing one's cards close to one's chest should be done safely and intermittently.
by King UwU Bean November 9, 2023
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a person that fucks multiple people only once and then leaves to the next dick
by valeriexxxx3 September 3, 2017
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