When the majority of things appear to be negative. Like the shape of a pear, the majority is at the bottom (bad) and little is at the top (good).
I lost my job, my girlfriend dumped me and I just got evicted. Life has just gone pear-shaped.
ayon kay sublimal ika-28 ng Hunyo, 2004
British slang term, used to describe when a situation has gone bad....I've no idea where it originates, but that's how it's used.
Since the new manager took over, things at work have gone all pear-shaped and I'm afraid I may be out of a job soon.
ayon kay Kucitizen ika-26 ng Hunyo, 2004