Never seen metal mickey but
bidibidibidi was Twiki from Buck Rogers.
(
Ratsta,
Fri 16 Nov 2007, 9:28,
archived)
But it was Twiki in Buck Riogers
who said "bidibidibidi"
sorry... I'll go away
(
Joe Scaramanga with a G-double-O-D vibration,
Fri 16 Nov 2007, 9:29,
archived)