2. Any extreme outburst of energy related to one's obsession with a fandom or an aspect of the fandom, especially when seen in random unrelated situations.
3. to experience a fangasm.
"If Kishimoto reveals that Yondaime is Naruto's father, I'm gonna fangasm!"
2."I fangasmed when I saw Vic Mignogna at A-Kon last year!"