You shall carry the negative consequences of your not having prepared properly.

A plant of certain species of the genus Brassica, or of related genera (especially Sinapis alba, in the family Brassicaceae, with yellow flowers, and linear seed pods).

Of a dark yellow colour.

(US) Alternative spelling of moustache.

must not (negative auxiliary); used to indicate that something is forbidden or, in a tag question, that something is not necessary.

(colloquial) Contraction of must have.

simple past tense and past participle of mustachio

Alternative form of moustachioed

An assemblage or display; a gathering, collection of people or things.

(transitive, obsolete) To show, exhibit.