By guess and by golly phrase
Relying on guessing and luck
I went by guess and by golly because I didn't know what the answer was.
By guess and by golly, I answered correctly.
To be thankful or grateful for one's good luck usually while avoiding a bad situation
Used to indicate that it is very easy to guess something
A normally unreliable person can still be right about something, even if it is only by accident.
It is used to say that someone is lucky.