Someone who is acting undesirable or unlike how you want them to
act. They are either being out of
line,
dumb, or going against you and pissing you off.
"Did you hear about how Kailyn from Teen
Mom cheated on
Jordan, why does she have to act so damn blumzey?"
"Remember when Christian Bale went off on the
set of Batman? I used to love him, but now I think he is blumzey as hell."