scatty

Adj.	1.	scatty - lacking sense or discretion; "his rattlebrained crackpot ideas"; "how rattlepated I am! I've forgotten what I came for"- Glenway Westcott Synonyms: rattlebrained, rattlepated, scatterbrained
	2.	scatty - lost in thought; showing preoccupation; "an absent stare"; "an absentminded professer"; "the scatty glancing quality of a hyperactive but unfocused intelligence" Synonyms: absentminded, abstracted, absent

foolish, rattlebrained, rattlepated, scatterbrained