A habitual gesture or way of speaking or behaving in regards to manure; a horse shit based idiosyncrasy
Natasha: “You’re never going to understand that horse if you don’t pay attention to it’s manureisms!”
To ask a person if they want the dirty shit they deserve.
WOULD YOU LIKE SOME MANURE?
White substance leaving the vagina.
I fucked Sara last night and got clam manure all over me.
Apparently, this means the same thing as "maturity". This word was used by Eddy in the "Ed, Edd n Eddy" episode "The Good Ol' Ed".
Likely a conflation of "manhood" and "maturity".
Ed! Can't you see I'm practicing for manurity?