Courtesy of Dean Adams' program guide:

    "Psycho Dad" theme song:
      Who's that riding into the sun.
      Who's the man with the itchy gun.  
      Who's the man who kills for fun!  
      Psycho Dad.  Psycho Dad.  Psycho Dad!   
      He sleeps with a gun, but he loves his son.  
      Killed his wife 'cause she weighed a ton... Psycho Dad!
        [From AL... WITH KELLY (501)]


    "Psycho Dad" new theme song:
      A little touched or so we're told.
      Killed his wife 'cause she had a cold.
      Might as well, she was gettin' old.
      Psy-cho Dad, Psycho Dad, Psycho Dad.
      He's quick with a gun, and his job ain't done.
      Killed his wife by twenty-one, he's Psy-cho Dad!

    "Psycho Mom" theme song:
      Who's the gal who needs no man?
      Killed him dead with the frying pan.
      Did it 'cause he missed the can.
      Psycho Mom, Psycho Mom, she's Psy-cho Mom!
        [From TEACHER PETS (621)] 

    Marcy's take on "Psycho Dad":
      Who's the guy who's show is done?
      Whose TV hero's on the run?
      Who'll be watching VH-1?
      Loser Al, Loser Al, Loser Al!
      [From I WANT MY PSYCHO DAD, PART 1]