The feeling of euphoria when the pressure in your sinus cavity or ears changes and opens up for a brief period.
After bending to pick up her Kleenex, Jess had an intense sinugasm which allowed her to breathe briefly through her nose.
by Heybee March 18, 2009
1 more definition
The exquisite, involuntary sinus reaction to being engulfed in Wasabe or Hot English Mustard. See also sinulate (sinus ejaculate) pronounced syn-u-lut
Things were going OK at the State Dinner until I had a sinugasm over the beef and mustard. When the poor Vice President had to wipe the sinulate off her blouse I thought I was going to pass out!
by barney_b December 09, 2009