What's that got to do with the price of fish?

A rhetorical question calling attention to a non-sequitur or irrelevant statement or suggestion made by another person. Primarily heard in UK. Yes, I agree that health care is an important issue, but what's that got to do with the price of fish? We're discussing tax incentives for local businesses—not exactly a related topic!

Common Names:

Name	Pronounced	Usage
Georgios	-	Greek, Ancient Greek
Freddie	['fredi]
Serafima	sye-rah-FEE-mah (Russian), see-rah-FEE-mah (Russian), se-rah-FEE-mah (Macedonian)	Russian, Macedonian
Senja	SEN-yah	Finnish
Antiman	an-tee-MAWN	Native American, Mapuche
Urijah	-	Biblical