When a person says a Rickism, he/she uses a figure of speech or an expression, where the essential point and meaning has been understood by the person using it, but the actual expression is said wrong because he/she never bothered to learn the actual expression- only when to use it

it originates from the series "Trailer Park Boys" where the maincharacter RICKY uses alot of these "Rickisms"

The belief that humanity as a whole is cursed, no human is actually worth anything and that by removing yourself entirely from society and emotion you win.
A Rickist believes that nothing is worth more than other animals accept Jack Russells and most dolphins