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 19, 2009
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 10, 2009