It means basically "who would have imagined that such a thing would happen?" You use it at the end of a statement where you have imparted some startling news. This can be a genuine statement of surprise, but is most often used sarcastically, meaning "we certainly could have imagined that happening."
"We had another pop quiz in Math today. Go figure." or "Tina showed up at the party already drunk. Go figure."
To figure means to calculate (as in, do figures), and in this case is extended to mean "think through", a meaning for "to figure" also found in "figure it out"( think about it until you understand it).
When someone tells you to go figure, it literally means they want you to think about something. When the "something" isn't specified (the phrase is used at the end of another phrase or by itself), it refers to whatever has just been said, and indicates that the speaker thinks there's something funny about it (though often it's black humour and it's depressing as soon as you stop laughing), and almost always about someone (or mankind as a whole) being stupid or Murphy's law applying. Can often be replaced with "which was to be expected" or "can you believe anyone in his right mind would do that?"
'Go figure' means 'who would have believed it?!' You hear this when something surprising has happened.
The phrase pop off means to go away.
Go for it Give it a try/shot
It means have a sleep for some time ...
Idioms are phrases that you can't guess what they mean just by reading them. This phrase is asking you to figure out what the actual words of the idiom would mean -- the "implied meaning" is what's not said, but meant.
Cowboys loved a colorful phrase! This is a descriptive phrase referring to wooing. Sparrow catching was looking for a girl to go out with you.
Cowboys loved a colorful phrase! This meant go to the full extent in any venture, to do things on a large scale. A good cowboy would go the big figure on the job.
figure it out yourself
Feeling Shame/ Being Dis-reputed
The phrase pop off means to go away.
'I will go.'
go back in time
Go for it Give it a try/shot
go figure
To go against the constitution.
Tell them to go forward
The phrase "go to rust" typically means to deteriorate or degrade over time due to neglect or lack of maintenance. It implies that something is being left unused or ignored, resulting in a decline in its condition.
"Go figure" is an exclamation of surprise. It means approximately "who would have figured that (whatever happened) would happen."