da fat rat wit da cheese
A person who eats all the good stuff and never gets caught. Like a fat rat in a cheese factory, but with more shame.
My cousin is da fat rat wit da cheese. He took my last pizza slice and didn't even say thank you.
That guy at the office party got free food and drinks. He's da fat rat wit da cheese.
My friend eats my snacks every day. He's the fat rat with the cheese.