Idioms with horses and others

______________________- there's never enough left for everyone else once he's been at the buffet. Source: theidioms.com

“Investing in such an unproven product was a mistake. He really _______________ on that one.”

"I don't believe it that she did it. I'm going to go to ask her and hear it ___________________.

You're ___________________ trying to persuade him to come with us – he hates going out at night.

He's a bit of a ______________: he was earning a fortune, but nobody knew.

Aren't you __________ by deciding what to wear for the wedding before you've even been invited to it?

We are getting late to go to the ceremony and mom is still yelling,_______

He likes to believe that he knows more than anyone else. I suppose that if he ___________________, he might have more friends.