Brain rush 

That feeling you have when you’re so focused you can almost feel your neurons working

“I’m on such a brain rush I’ll finish this essay in no time!”

Brain rush by Daniloren April 10, 2022

FG brain rush syndrome 

The feeling that those silly Family Guy fans felt when Family Guy was brought back from cancellation in 2005.

I noticed he got the FG brain rush syndrome ever since it came back in 2005. He has never felt so great since 2002 when the show was in the old series.

FG brain rush syndrome by Seshie February 12, 2009

braincrush 

When you have a crush on a person's brain, with complete disregard to appearance, availability, etc.

Laura has a braincrush on Thomas Jefferson.

braincrush by awesomeaardvark October 21, 2009

Brainkush 

A sudden epiphany involving a realization about everyday life that seems life altering but is then forgotten by the short term memory loss caused by Marijuana use.

"Cheese melts faster on bread because of it's porous texture" = Brainkush

Brainkush by Broe February 15, 2008