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
Rudolph	['ru:dɔlf]
Leopoldo	le-o-POL-do (Spanish)	Italian, Spanish, Portuguese
Vina	-	Indonesian
Kawehi	-	Hawaiian
Iarfhlaith	EER-lah	Irish
Sullivan	['sʌlivən]