megalomania 

a psychopathological disorder resulting from delusions of magnificence, grandeur, or omnipotent power -- usually, but not limited in the interests of money or other wealth.

(1) Adolf Hitler

(2) Saddam Hussein

(3) Osama BinLaden

megalomania by Postman January 13, 2005

Megalomania 

Obsession over your own power

The tiny green creature below is a common source of megalomania.

Megalomania by ArminArlert August 29, 2017

megalomania 

Actually, I'd rather not.

Bill Gates is just a very good bizniz man.

megalomania by Gumba Gumba May 28, 2004

megalomania 

see bill gates

megalomania by Anonymous August 28, 2003

Omegalomaniac 

From the last Fall Out Boy single before their undefined hiatus, Alpha Dog. It goes with the word "megalomaniac," which is basically thinking your the shit, with the o added on the front so it looks like "omega" (To go with Alpha Dog). It's actually quite a good song.

Alpha dog and o-o-omegalomaniac

Omegalomaniac by tell rock&roll im alone again November 16, 2010

megalomeiniac 

mega / lo mein / iac

someone who is obsessed with chinese takeout

he's a megalomeiniac because he ordered chicken lo mein seven times this week!

megalomeiniac by NiraMillson January 9, 2017

Megalovania 

The feeling of your sins crawling down your back

After hearing about the bad time they where about to have, they started to experience a sharp sense of Megalovania.

Megalovania by coolskeleton22 May 4, 2016