Possible Clues:

• ''Once . . . . . . twice shy''
• A little young to have been infected by the craze
• Once this from the teeth out, twice to the end of 17 across
• Wounded bird's knocked right out
• Once this, twice shy they say
• ` `Once ...... twice shy' '
• Attacked with teeth
• Once ......, twice shy
• ''Once ......, twice shy''
• Once this may have a couple of shies after it