Someone who thinks they're a gangster from New York who can't cook, has hippie parents, wishes he was black, has an imperfect chest, rope-like hair, dresses like a shmo, and who counts jerking off as getting laid.
R.J. Brown is the biggest shit goose ever! Wait, isn't his name goose shit? That's the way the ladies known him.
simply, this phrase is a "nice" way to tell someone to take a flying fuck to a rolling donut, take a flying fuck, go fuck yourself, get lost, kiss off, go suck an egg, go fly a kite, etc.
A person who preaches, whines, and bitches about being wholesome, safe, or smart. Usually describes a friend who was once thought of as cool and fun, but when brought to a party, turned out to be a sour nag.
We brought Samantha to the pudding party to have some fun, but instead of living it up, she went all Mother Goose on us and bitched about us acting stupid.
Goose Trap (n.) When deciding which one of your friends should be the designated driver for the night, you tell them that you will be for that night, but you ask one of them to come over for a bit for some made up reason and you get drunk before he/she gets to your house. This is called a goose trap because it is a type of trapping mechanism to make someone else be the designated driver. It's particularly called the Goose Trap because of the infamous Gray Goose Vodka which is known to be a popular alcohol among teenagers.
Don't ask Matt to be the designated driver because he'll goose trapus again!