mc5 - ... so help me God.

As for my poultry farm - well, let's just say it was a cock-up.

With all the talk on nanotechnology these days, I thought there would be a niche for sub-micron fluid holders, but it pailed into insignificance.

I got a job in jungle clearance, but I couldn't hack it.

I tried to design and market a kitched implement for preparing pungent seeds of certain cruciferous plants, but it didn't cut the mustard.

...and my careless typo in the last one shows why I only worked on a dictionary for a short spell.