Basically the answer to Graves' tick up the ass behavior is alcohol to loosen him up. So everyone just keeps on handing him firewhisky. Shot after shot after shot. And that's when everyone discovers that Graves is a horny drunk. If it's warm and it moves? Graves will tap that!

Bonus: Graves-centric orgy.
Double bonus: if Newt's creatures join in as well.
My first-born: if Graves somehow ends up being the MACUSA bicycle