My pet hate(s) are when they touch the stereo (drivers selection only, you don't like it, invest in an iPod), wipe the interior of the windscreen with their hands/gloves (it's not as if the demister takes ages), or move the seat back so it 'squeaks' against the rear (I then spend hours looking for rubbing marks to remove). Food & drink are zehr verboten!!
Tapatalking...