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
Aggie	AG-ee	English
ConcepciÓN	kawn-thep-THYON (Spanish), kawn-sep-SYON (Latin American Spanish)	Spanish
MÉLisande	-	French
Tate	TAYT	English
Kelley	['keli]
Sari (2)	-	Indonesian