Top Definition
A word used to describe an undesirable person, with a tendency to be achingly annoying, who inflicts their presence on you in inconvenient situations such as traffic, the workplace, the supermarket, bars and shopping malls
The cocktonsil in the car in front of me is driving at 25kms an hour.

My boss just asked me to fetch his laundry. What a cocktonsil!

I just got stood up by the biggest cocktonsil in town.
by TheJoLurie July 24, 2010

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