off the dome

improvised, as in freestyle raps (dome=head).

"bitch you gone / I freestyle, I'm off the dome"
-lil flip

by scose January 18, 2005

That concert was off the dome!

My new screenplay is off the dome!

My Jabba the Hutt socks are off the dome!

by Rick Herringbone December 30, 2016

Off the dome

That came/happened out of nowhere and without any warning

He literally just came and asked me to marry him, off the dome…so of course I said no

by ChainSmoker530 June 14, 2021

a lackadaisical term to refer to someone who spoke off “the top of their head”. Not to be confused with getting brain.

Bozo 1: Hey did you say that off the dome?
Bozo 2: yeah it was off the cuff
Bozo 1: wow you must be so eclectic and interesting

Out of your damn mind

The action off coming up with an original idea or answer.

Justin: Eric, how in the world did you ace that Calc test?
Eric: Easy, it was straight off the dome.

Nah, fuck that. Yuz really off ya dome right now homie.

by Rangerlt September 10, 2006