everybody know it vs everybody knows it

Some examples from the web:

• And everybody know it, too
• Everybody know it for girls!
• It's not officially forbidden, but everybody knows it is anyway.
• Everybody knows it's your birthday.
• Everybody knows it's about talent, originality, a sense of humor...
• Everybody knows it builds up muscle tone.
• And look, everybody knows it.
• But everybody knows it's Jackie.
• Everybody knows it, and Soso, too.
• Now everybody knows it who they were.
• Because she's blameless; everybody knows it.
• But everybody knows it's just a front for his drug deals.
• And I appreciate you making sure everybody knows it.
• Everybody knows it's my thing.
• Forget a grand entrance... everybody knows it's the exit they'll remember.
• Everybody knows it's double two weeks' pay.
• Everybody knows it's Puerto Rican chess.
• Everybody knows it's American ninja warrior.
• He's ruined the whole company, and everybody knows it.
• Everybody knows it. it's just one of those places.

Some examples from the web:

• Ben started it and everybody knows it.
• Not a secret if everybody knows it.
• And look, everybody knows it.
• But it's true, everybody knows it
• You have no choice in the matter, and everybody knows it.
• He's taking coke and everybody knows it.
• That's my thing, and everybody knows it.
• That Cafferty kid wasn't shipped out, he was hand-delivered by Principal Taylor to East Dillon, her husband's team, and everybody knows it.
• It doesn't matter who did it. It's out there, and everybody knows it. Period.
• You are a liar and a hypocrite, and now everybody knows it.
• Not a secret if everybody knows it.
• You can touch the girls for three seconds and everybody knows it.
• You know it, I know it, everybody knows it.
• Everybody knows it, even you.
• and McDonalds on Shevchenko. Everybody knows it.
• Everybody knows it. it's just one of those places.
• Buonaiuti wrote him: «You are the Good Samaritan. Everybody knows it; I know it better than anybody».
• Everybody knows it, so what?
• Actually, everybody knows it.
• Now everybody knows it.