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.