when joe trohman (fall out boy) spins around on stage
origin: "based on his last name trohman mixed with the word mania. thats the trohmania and hes a trohmaniac!" -andy hurley from making of dance dance
Pete wentz on trohmania: oh ya he does that thing. its f***ing insane how fast he does it. i've tried to imitate him before but only he kind of masters it. and it's kind of awesome except when you get hit by it alot and he falls down a lot. -pete wentz
An evolved form of "megalomania", where you are basically aware of your hyper delusions of grandeur, yet you can get a hold on them and display your godlike complex whenever you like, turning into a "normal" person when it's needed.
The unit prefix -tera is obviously a multiple of -mega.
Today I felt like a godlike being at Rob's party. I felt superior to every guest, they were so shallow if compared to me. Then I got back home and calmed down, I didn't want to raise any suspect about my mental state. That's teralomania, baby.