They say 'une bouche' or more impolitely, 'une gueule'.
Literally,
la fete dans ta bouche.
Canada's New Democratic Party is a social democratic party. Its conventions provide translation from English to French and French to English.
"Party" in English is fête or soirée in French.
"At the party" is an English equivalent of the French phrase Chez soirée.Specifically, the preposition chez means "at." The feminine noun soirée means "evening party" in this context. The pronunciation will be "shey swah-rey" in French.
let the party begin
"It's a party!" in English is C'est la fête! in French.
"A large party" in English is une grande fête in French.
"Come to the party!" in English is Venez à la fête! in French.
"I want to party!" in English is Je veux faire la fête!in French.
Let's Party= vamos a celebrar
"We're going to party!" in English is On va faire la fête! in French.
"Are you enjoying the party?" in English is Tu t'amuses bien à la fête? in French.
"You are invited to a party!" in English is Vous êtes invité à une fête! in French.