have windmills in (one's) head

To be lost in dreams and illusions, rather than rooted in reality. I appreciate Sal's ability to see beyond what is happening right now, but some of the wild ideas he comes up with make me wonder if he has windmills in his head!

Common Names:

Name	Pronounced	Usage
Hamnet	-	English (Archaic)
Bleda	-	History
Yahveh	-	Theology
Latham	['leiθəm]
Iseul	-	Korean
Xochitl	-	Native American, Nahuatl, Spanish (Latin American)