Hair

keep your hair on

Meaning: to request someone to stay calm and not get annoyed

Example: The general kept his hair on during the meeting this time. Read on

in the cross hairs

Meaning: in a position where one might receive severe criticism

Example: The man was in the cross hairs from the very beginning of the interrogation. Read on

wild and woolly

Meaning: to be carrying a wild look

Example: Their residence is totally wild and woolly but all in all I found them to be warm people. Read on