A fork of Rural Dictionary
It's when an extrodinaraly old man takes viagra and it gets bigger, but not hard and flops around like a trout, then he slaps a girl in the ass with it.
Phil's dad gave me a rusty trout last night
A large person, usually over 250 pounds, whom is not only fat but also ugly and smells bad, like some sort of combonation of fat sex and mexican food, and they are very controlling of their sexual partner
"Did you see that fat bitch brittany walking down the road? She was a cowosarus!!"