Lyric discussion by butterfingersbeck 

Cover art for Clever Trevor lyrics by Ian Dury And The Blockheads

The correct spelling of the title of this song (yes, I know that it LOOKS wrong!) is "Clevor Trever". The implication being that the character is so stupid that he can't even spell his own name correctly...

Lyric Correction

It might be that, but Dury also liked to make up stupid words so they rhymed. For example;

I'd rendez-vouez with Janet quite near the Isle of Thanet she looked more like a gannet she wasn't half a prannet

Prannet isn't really a word, but its funny.

So maybe it's Clever Trever to make it more similar.