Nick names

Was listening to radio and they were on about Nick names,and why people have them one blokes was 18 months,this guy went up to him and asked him why do they call you 18 months?.well I had an accident a few years back a lost part of my ear,what's that got to do with ya nickname ask the guy.well 18 months thats a ear and a half,

So tell what Nick names you have,and orther people you know and why