This is used to describe someone who gets way beyond boong drunk. they are usally seen out stumbling around, not been able to talk properly.
Liam - i saw Cassie out at metros on the weekend she was cassied"
by benno86 June 01, 2012
In a state of complete shit-faceness; drunk off your ass; unable to reject sexual favours of anysort. (Especially on weeknights)
No man, she was just totally 'Cassied'
by Funkymonkeygoofball July 16, 2010
To be utterly shitfaced on all nights of the week.
nah man, she was totally cassied
by gardyklee July 18, 2010