When you are dating an SLP (Speech and Language Pathologist) who works with disadvantaged or special needs children and you cant be trusted not to drop the word RETARD so you come up with a proper alternative that she will have no clue what you are referring to until she finds this post.
noun: Dont be a Rickie Tardis!
adjective: Thats just Rickie Tardis! or "you fucking rickie tardis"