(colloquial) That which belongs to both of them; the possessive third-person plural pronoun used without a following noun.

plural of Her Royal Highness and His Royal Highness

(vulgar, slang, the third person singular) they (in the singular); them (in the singular); themself (in the singular); themselves (in the singular).

Alternative form of everybody and his cousin

Alternative form of everyone and his mother

Alternative form of everyone and his mother

Alternative form of everybody and his grandma

Misspelling of theirs.

Misspelling of there's.

(idiomatic) To cause someone to become very busy, especially to an exhausting degree; to make someone work very hard and very quickly.