-to be in a state of extreme alertness or to be behaving strangely as a result of said alertness
note: the state of alertness is almost always a direct result of an intoxication of some kind, usually drugs, alcohol, sugar or red bull.
I CANT HELP IT! I'M SHMEAGOLING~!!!!~!!1!1!
note: "shmeagol" is often used out of context, as shown in the example below.
Claire, why are you acting like such a crzy n00b?
I CANT HELP IT! I'M SHMEAGOLING~!!!!~!!1!1! SHMEAGOL SHMEAGOL SHMEAGOL!!!! WUAHAHAHAHAHAAAAHAHAHA T3H SHMEAGOL=OMFG!!@@!!!