You should talk
"Button your lip" is an idiom that means to be quiet or stop talking. It is not a figure of speech in the traditional sense, but rather a colloquial expression.
You should talk
Stop talking.
It means exactly, be quiet, hush, shut up, quit talking.
move with agility
Treatment for cleft lip typically involves surgery to repair the separation of the lip. The surgery is usually done in infancy to improve appearance and help with feeding and speech development. Follow-up care may include speech therapy and orthodontic treatment as the child grows.
"To kick up your heels!" is to celebrate. Get up and do something.
Metaphor
hyperbole
(Having) Butterflies in one's stomach is a figure of speech. It is used to describe a certain sensation one would feel in their stomach when being nervous or in love.
Lip Up Fatty was created in 1980.
"Shut up" IS slang - it means be quiet. You can also say things like "Shut your mouth," "Button your lip," or "Zip it."