When a women is wearing a lovely sundress or skirt and a gust of wind comes and lifts it up.
I was driving down the road and the wind came and blew up these two ladies' dresses. I almost ran into a tree because those were the best Devil's Sneezes I have ever seen.
The Devil's Sneeze was made into an iconic image when Marilyn Monroe had that picture taken.
The eruption smelly gas coming out of the anus. Sometimes it makes a noise sometimes it doesn't. The one that makes a noise is known as a trouser sneeze. You have to be careful not to follow through. See fart, trump and air biscuit.