ok. here goes. i have two cats. they both love to play and lay on plastic grocey bags. they don't climb into them,just lay on top. the next thing the younger cat does is "neads bread"on my wife when we go to bed at night. if you try to stop her,or if my wife moves when she is doing this , my wife gets bit by her. my wife enjoys the "massage",but not getting bit when the cat gets disrupted. any ideas about this?