A sneeze so powerful that it causes one to shit thy pants. Similar to a snart, yet messier. Can be used in both noun and a verb form.
Gee whiz! After last night a snart would have been understandable, but that rusty sneeze completely caught me off guard. Let me get a towel.
by IamBanjoMan September 30, 2010
Randolph: (loud sneeze)
Antoine: "Wow, bro! That sounded like a rusty sneeze."
Randolph: ROTFLMAOUISM
Antoine: "Exactly."
Antoine: "Wow, bro! That sounded like a rusty sneeze."
Randolph: ROTFLMAOUISM
Antoine: "Exactly."
by iambanjoman January 18, 2012