Whilst working as a refueller one very sunny Saturday afternoon last summer I was filling up a Europa, and whilst attaching the earthing wire to the exhaust I managed to smack my face on the rather sharp trailing edge of a new 3-blade prop.
Cue stars flying around my face and a neat inch long cut down my eyebrow, closely followed by 3 hours in casualty waiting to get fixed up, 3 days of a black eye about a month of p*** taking from my course mates.:o :o :o
The owner was more concerned about his prop, which was now decorated with quite a few of my eyebrow hairs.

Head Cases
 

For PLFSAgain et al.
The moral of the story is ---- always wear your flying helmet!
Rgds.