Not On Your Nellie
G'day from Aussie,
we don't have any strange phrases down under, but what about this bonza old pommy one
anyone got any ideas?
Cheers, Pete
Always nice to hear from another part of the world. Eric Partridge says a little about your phrase in Dictionary of Catch Phrases: American and British, from the Sixteenth Century to the Present Day:
not on your Nellie! (or Nelly) 'Not on your life!' An intensive
tag, dating since the late 1930s. Used by, e.g., Frank Norman in
his very readable "Bang to Rights," 1958. Short for 'not on your
Nellie Duff!'; and 'Nellie Duff' rhymes on 'puff', breath, breath
of life, life itself.
(Partridge also says that "not on your life!" dates from the late
1880s or perhaps earlier.)
So it seems to have begun as rhyming slang.