Does it constitute the path to insanity ? (5,6) C?A?Y ?A?I?G
All others follow Irishmen to the street (5) ??R?T
Chick has fluorine with a gin cocktail (5) ??I?G
2, First.
The Irish word "Fir" means "men", with "st" for street.
You'll see "Fir" on the door of the gents toilet in many Irish pubs.
All others follow "first".