Clearly I'm at a loss. ONS isn't an abv. for once, then? Does it mean: One Night Sex?
One Night Stand. As in, only one night. While it’s probably a good guess that such encounters end with the guy or gal slipping away in the middle of the night and the guy falling asleep after the first time, it’s not contingent upon such occurances.
So, even if they have sex 10 times in one night, it still only counts as once?
So long as it remains grouped as one event that does not repeat itself in close proximity as to count as a relationship. /Things one learns from television for 100/ For instance, Barny has a series of ONS, doesn’t mean he wouldn’t dabble more than once before the emergency call on his phone calls him away.
/has never seen Toy Story/
CANON CLARK: Okay, I could have done without the nausea, but I did get to watch Lois change her clothes in silhouette. VERY nice.

Michael