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1.
Riding on the pegs, crossbar, or handle bar of someones bike when they are riding the bike
im going to town.
giz a coggie
by Andyyyyyyyyyyyyyyyyyyyyy September 10, 2006
 
2.
A Liverpudlian word for a bump/lump on the head after an injury, commonly referred to elsewhere as an 'egg'.
Aaah! My baba's gorra massive coggie on 'er 'ead! We had to take er to the hossie!
by Fasta July 05, 2010