To spend a lot of money. Usually this is done at a bar when buying numerous drinks. One hand holds the money palm up, while the other hand flicks money into the barmaid's face.
"Dropping the Poodle" refers to an action in which the owner of a large dog asserts their dominance over the dog in order to get the dog to drop whats in it's mouth. Typically a smaller dog such as a poodle.
Asserting one's dominance will typically involve inserting one or two knuckles of a finger into the dogs rectum.