Adjective/Noun/Verb
The act of taking too much viagra therefore causing a prolonged erection
Doctor: "and what was your last oral intake Jimmie?"
Jimmie: "well I took some viagra."
Doctor: "it seems to be that your diagnosis is a case of zero gravi-d"
Adjective Noun/Verb
The CURSE of a never restful penis. Thus, Zero-gravity Dick.
"He shall be cursed with zero gravity dick until the chosen one manages to speak to him without falling victim to the erect penis. Only then, will the curse be broken."