The event of having to sneeze, but it won't happen. Then all of a sudden, a powerful sneeze is released followed by a feeling of relief.

An orgasm of the nose.
John: -ACHUUUU!!-
Frank: Dude, I saw that building up. Total sneeze-gasm.
by sierramyst93 November 24, 2010
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To sneeze to an excessive amount thus triggering an orgasm
I sneezed so much dawg, I damn near sneeze-gasm'ed
by Sneeze-spert January 4, 2012
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A sneeze-gasm is the orgasm a guy has when he's jacking off and has an explosive cumgasm and sneezes at the same time.
I had an awesome cum-shot when I had that sneeze-gasm yesterday!
by USAF Cadet November 5, 2020
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