Possible Clues:

• Paint spray is not appropriate
• Unsuitable apparatus initially installed in home gym
• Not suitable or appropriate
• Not suitable as part of Advanced Passenger Train
• Not suitable for girl to take exercise
• The item with fuzz lining is not fitting
• Doze during computer class? That's not on!
• Not proper, to doze during Computer Studies
• Cartoon duck
• I doze off before end of it? That's badly judged