The phrase cela va déchirer is French slang for saying something is going to be huge, intense or wildly successful, while the existing description frames this clip as très très grave, very very serious. With no confirmed film or show source attached to this upload, its life has been mainly on soundboards and in short edited videos shared among French speaking users. It survives because the wording works both ways, as genuine hype when something really will impress and as sarcastic warning when everything is about to go wrong.