The act of wearing a flashing red bike light on the collar of your shirt in a similar manner to a bow-tie.
by Domingo Cortez March 19, 2009
Wearing a rear bicycle light in the same manner as one would wear a bow-tie. Light is generally attached using a clip to the collar. Light is switched on/off as desired. Must be flashing when on.
'I say Jenkins, that chap is sporting a rather fine clapham bow tie, what?'
'Eeey blud, set me your clapham bow tie. Also your phone.'
'Eeey blud, set me your clapham bow tie. Also your phone.'
by Dr. Lady Lolbert Monkeybush March 19, 2009