A very rare occurrence when a song comes on and everyone sings with it because it is so familiar.
1. Today on the bus, "Hey There Delilah" came on the radio, and everyone started singing it. It was such a High School Musical Moment.

2. Yesterday, in art class, the art teacher turned the radio on. Everyone was silent until "Rock and Roll All Night" came on, then they started singing along; it was a total High School Musical Moment.
by Prinsen Kaos September 7, 2010
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When you’re talking to someone while high on marijuana/hashish, and you have a short conversation after which there is a long pause, where both people are thinking about what was just said, until one of you say something.
Tommy: Bro J.I.D does kind of sound like Kendrick Lamar though

Jimmy: Are you crazy? I’ve released farts that sound more like Kendrick than J.I.D does

*long pause (2-4 mins) where both are thinking about what was being discussed*

Jimmy: Damn bro we had another high moment

Tommy: Shit, you’re right

*both burst out in laughter*

*another high moment*
by Sopranito December 21, 2018
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When you have a high bitch moment and do something you will regret later on
John: yo dude what happens to her hair

Leo: she cut it all of while having a high bitch moment bro
by Buffdaddy69 October 9, 2019
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when someone is having the time of their life, and act high key drunk, but they're not high off of drugs or anything. No, they're high off the moment.
"OMG is that Chanel drinking her third bottle of coca-cola?"
"wasn't she on a diet-"
"dUdE nO, SHeS JUsT hiGh oFf ThE mOMeNt"
by HighOffYourMom October 1, 2021
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