What is Clapham Bow Tie?
1.
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.'
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Random Words:
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It’s a small dent in a can of beer just below the spout caused by the pressure of your thumb. This process helps the beer to flow faster.. 
1. 
Stuff stuck in one's teeth. In need of a toothpick.
The person you are with has just had something to eat and there is green crap ..