Mickey Fickey is the TV friendly version of Mother Fucker.
It first appeared when TBS first aired Spike Lee's Do The Right Thing back in the 90's, overdubbing all uses of the word "mother fucker" with "mickey fickey". This actually made some of the scenes, especially the part where the
guy is trying to buy 20 D batteries, quite
funny.
"D! MICKEY FICKEY, D!"
The term has since grown in popularity as
people use it in place of mother fucker to be funny.