You must be joking!

(informal)

something that you say in order to tell someone you do not think something they have said is serious because it is not likely to be true or to happen 'Did Alex get you a present, then?' 'You must be joking! He didn't even remember it was my birthday.'

Common Names:

Name	Pronounced	Usage
KĘStutis	-	Lithuanian
Mudiwa	-	Southern African, Shona
Nanuk	-	Native American, Inuit
Bogumil	-	Medieval Slavic
Aesculapius	[.i:skju'leipjəs]
Isidorus	-	Late Roman