When you have had so much exposure to another persons sex life/sexual activities, that you know things about them and/or their partner(s) that only someone who has had sex with that individual or their partner(s) should know.
"heard you had second-hand sex with your roomates girlfriend"
"yeah man, bunk beds suck."
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The act of getting AIDS as a result of having sexual intercourse with an individual who recently was a sexual partner of Magic Johnson
Person 1: โYo man, I got second hand magic yesterday!โ
Person 2: โ Oh, did you buy a used magic kit?โ
Person 1: โ No, I had sex with a girl who recently fucked Magic Johnson!โ
When you witness another person become aroused leading to you becoming aroused
Max was horny and had a boner, Andre was looking and he got a boner. Andre had second-hand arousement
a state of intoxication where the said "drunk" person did not have a sip of alcohol but seems to be in an intoxicated state. Mostly prevalent in the Irish or Celtic people because of their inherited ability to absorb alcohol from the air, with a high enough concentration.
At the wedding, young Patrick and Bridget seemed to be drunk even though they could not possibly be. Aunt Eileen nudged her husband and said "must be the second-hand drunkness."
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The first person farts and another person breathes that fart but breathes in onto somebody else thus being a 2nd hand fart
(Also can be into your hand and letting it onto someone else)
Dave: Woah your breath stinks of ass you should brush your teeth once in a while
Yiam: Its not my breath its a 2nd hand fart from ollie! :P
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The residual effects of a blowjob still remaining upon a womans lips in the immediate hours after said blowjob.
So your friend got a blowjob on the way to meet you, and you know this. And when she goes to kiss you on the cheek after dinner you step back quickly because you dont want any of your friends second hand semen from her lips, and or mouth to reach any portion of your skin.
This happens to Larry David in season 7, episode 2 of Curb Your Enthusiasm.
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When you eat other people's food but you wouldnt have bought the food yourself
Hey Billy forget the second-hand smoke, your Second Hand Eating is gonna kill ya!
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