It means in French, let's leave. Se casser in French really means to break. But in slang, se casser means to leave. On is a familiar way of saying, We. Thus: Let us (we) leave. The se is a grammatical word and this is not a French lesson so let us leave it at that.
Cette boum est morte, on se casse!
This party is dead, let's leave!
This party is dead, let's get the hell out of here.
Voilà la police, on se casse!
There is the police, let's get the hell out of here!
This party is dead, let's leave!
This party is dead, let's get the hell out of here.
Voilà la police, on se casse!
There is the police, let's get the hell out of here!
by monsieur screech August 2, 2007
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by Nova Silver July 16, 2016
Get the Cassa mug.The best girl anyone could meet! Shy and caring one you get to know her there is no one you'd ather be with! So gorgeous but won't see it! So honest it's refreshing! Once you know cassidy you will never want to be away from her!!
'Is that Cassidy... she's gorgeous'
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Get the cassey mug.Cassidy is a great friend. She is always there for you, no matter what. She has the best fashion out of everyone I know. She is beautiful inside and out! Everyone loves her. She is the life of wehre ever shes at! Anyone can tell her anything and she will listen and wont judge. Shes really my best friend!
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