know one’s ass from a hole in the ground

tv. to be knowledgeable; to be alert and effective. (Usually objectionable.) That stupid son of a bitch doesn’t know his ass from a hole in the ground.

Common Names:

Name	Pronounced	Usage
Channing	CHAN-ing	English (Modern)
Keshet	-	Hebrew
Boleslava	-	Czech (Rare), Russian (Rare)
Gresham	GRESH-əm	English (Rare)
Sirvart	-	Armenian
ÁLmos	AHL-mosh	Hungarian