It must be the means of transport that makes cyclists aggressive.
 

YCMIU

A man assaulted his cousin with a bicycle seat.!

as his cousin rode past - giving Sharples as wide a berth as he could -
Sharples hit out at his cousin with his bike seat, still attached to the
metal stem.

http://www.lep.co.uk/news/morecambe-...usin-1-7809538