Top marks to VitalyzdTV for this one — even if your prank radar was on full alert you’d still probably shit yourself if you stepped into a quiet car park and saw this happening:
https://www.youtube.com/watch?v=oFMsqrG9RWg
These YouTube pranksters are really asking for it these days, though I guess you’re less likely to get knocked the fuck out mid-prank when you’re wielding a chainsaw.