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One who is absent minded

Also a sex pistols song.
We're pre-tty,

Pretty va-cant.
by Kung-Fu Jesus April 18, 2004
An entirely empty and passionless state of being.
She doesn't care about anything one way or the other; she's pretty vacant.
by Pretty Vacant 050 February 02, 2011
the best sex pistols song EVER!

(along with anarchy in the uk, god save the queen, and EMI, of course...)
we're so pretty...oh, so pretty...

...we're vacant!
by Daisy McJuniper March 28, 2005