"It's what it's" is a grammatically correct sentence

[ChemicallyEnhanced]

Just something that irritates the hell out of me and it was in my head and I couldn't be alone with the knowledge. Sorry if I ruined your day.

 

[Mysterier]

Well, so is y'all'd'nt've'd'd'I'd'nt'ved'y'all't'ved.

That knowledge will ruin someone's Christmas.