(fandom slang) A notably unusual, tangential scene in a movie or similar work of fiction, which occurs without setup and does not affect the story afterward.

simple past tense and past participle of button up one's lip

present participle of button up one's lip

Third-person singular simple present indicative form of button up one's lip

In any situation, however well planned, something can always go wrong.

Alternative form of there's many a slip twixt cup and lip

Alternative form of there's many a slip twixt cup and lip

(idiomatic) One will not tell anyone else; one is keeping a secret.

To discern what someone is saying by watching the shape of the mouth rather than by hearing the sounds of the words. / (idiomatic) To pay close attention (often imperative).

Used to emphasize a following statement.