Top definition
When you're smoking marijuana while jerking it and you accidentally squirt after a hit.
I had this whole evening planned out in front of my computer, man, but then I had a highgasm and it was over before it started.
by strx3872 February 11, 2010
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Jul 12 Word of the Day
The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.
Message: "i'm free this afternoon so come over and fuck me senseless, my parents will be out all day"
Recipient: Mum
Message Sent
- Onosecond occurs here -
by Jimmed September 26, 2006
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2
when you highlight is poping to the motherfucking goddess.

when you're the fucking sun.
becky:''omfg your highlight is giving me a highgasm''
kate: ''thanks, bitch' '
via giphy
by bitch411 February 05, 2018
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