The act of literally going 'Frodo'. Usually this involves discussing things in terms of their relative level of 'preciousness' constantly and sitting on the roof stripped naked.
Going 'Frodo' is often the result of a particularly stressful life event such as lack of dope or an excess of it.
"Uh oh. He's gone Frodo again."
"Stay away from him, he's liable to go shitting Frodo on you."