A fork of Rural Dictionary
1) When the shit hits the fan. Big time.
2) A shart of such epic proportions one could write a grade B horror movie about it.
1) Oh man. My girlfriend was so pissed it was like a shartnado in there.
2) Dude, I went to Mexico and had shartnados for a week.
If more than one person in a group farts loud, often and with a heavy smell, you are finding yourself in the middle of a shartnado. Health issues may or may not occurr
Shartnadooo!!!!