Similar to a one night stand, a one night hand involves receiving a hand job from an acquaintance, either known or unknown. After said hand job, neither party acknowledges the others existence.
Cindy gave me a one night hand last tuesday and i haven't talked to her since...
Calling someone up for one night of phone sex with no strings attached and hoping to never speak to them again.
Kiki: So i ended up conecting to the same customer service guy last night.
Mia: Was he any help this time?
Kiki: No but we totally had a One Night Hand!
Mia: OMG Thats so slutty!
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.