To become hysterical. Only used when giving a speech without a teleprompter. Is currently being spread around the internets as a catchphrase, but that depends on what the meaning of "is" is.

To act in an arrogant and condescending manner toward a constiuency.

An ironic term used by our president to make fun of the stupidity and immaturity of the Republican party getting pissed off about the health care bill. The fact that no Republican seems to get this makes it even funnier.

To argue from emotions without much logical thought. From the "This little piggy" story. The last little piggy "cried wee, wee, wee all the way home." It was use by Barack Obama in August 2009 to describe Washingtonians. To say it came from urinating would not have a coherent meaning. It may have been a spontaneous term that filled the niche at that moment.

A politically-correct Washington-speak version of "pissed off".

a puppy, dancing in a circle in anticipation of a treat or a ball toss can get all wee-weed up, or hyper active and lose control of the bladder.

Wee-wee'd - refers to urinating. When a person is "wee-wee'd up" they are all excited or stressed about something to the point they would wet themselves or wet the bed.