all in (one's) head

Not substantial or real; having been imagined or invented. I don't know why you think I don't trust you. I can assure you that it's all in your head.

Name	Pronounced	Usage
Filippu	-	Old Church Slavic
Ovadia	-	Hebrew
Sayen	-	Native American, Mapuche
Kari (2)	KAH-ree	Finnish
ChloÉ	klo-E	French
Fridwald	-	Ancient Germanic