when two Sundays meet

Never. Usually said sarcastically. A: "When are you going to help me clean out the garage?" B: "How about when two Sundays meet?"

Name	Pronounced	Usage
Burchard	BOOR-kahrt (German)	German, Ancient Germanic
Attilio	-	Italian
Etna	-	Irish
Charlotta	shah-LOT-ah	Swedish
Cortney	['kɔ:tni]
Carver	['kɑ:və]