Ricki Lake is an actress and former talkshow host who was sometimes referenced in jokes about peoples' weight. this is an insult saying someone is fat - they would have to lose weight just to be the size of her.
a reference to dividing ("splitting") ounces of cocaine into 1/8th of an ounce portions known as an 8-ball, and bragging about selling ("flipping") the entire supply you purchased or received from a supplier (probably a large quantity) in only 8 days.
i'm not so tough that i carry a gun around with me (gat is another name for gun) - instead i carry around a soldering gun, which is a tool you plug in and heats up to melt solder and repair electronics (attaching wires to circuit boards, etc.)
not a reference to putting off baking and preserving bread dough, instead this is a way of saying that I am going to continue making money (my bank account will not be frozen at its current balance)
because of all the criminal activity Dr. Dre witnessed in Compton California, it was not unusual for the people of his neighborhood to find corpses of people who were murdered on Greenleaf Boulevard just north of Interstate 91
There is a dance called "walking it out." In the song, DJ Unk says, "take 2 steps to the left & 2 steps to the right. Bring it back, now I made yall walk it out" He means that by following his instructions, you have done the dance; "walked it out."