Indelible

[Britney]

That can not be removed, washed away, blotted out, or
effaced; incapable of being canceled, lost, or forgotten; as, indelible
characters; an indelible stain; an indelible impression on the memory.

[Justin Bieber]

Using the adjective indelible with a bad [connotation]. When you say something is indelible, you are saying that it is indelibly retarded. As in, the [subjects] [stupidity] leaves a lasting mark on you. It can also be used as a noun to describe someone who is indelible.

[Agnes]

(of ink or a pen) making marks that cannot be removed.

[Merna]

An indelible mark or substance is impossible to remove by washing or in any other way: