would give your eye teeth

give (one's) eyeteeth for (something)

To go to any length or relinquish anything of value in order to obtain some specific thing in return. Almost always used after the modal verb "would." Oh, I would give my eyeteeth for curly hair like yours. She said she'd give her eyeteeth for a chance to meet the singer in person.
See also: eyetooth, give
Farlex Dictionary of Idioms.

would give your eye teeth

BRITISH, INFORMAL
If you would give your eye teeth for something or to do something, you would love to have or do that thing. He's the most exciting man I've ever worked with, and I'd give my eye teeth to do something with him again. I'd give my eye teeth for an opportunity to join that company. Note: A person's eye teeth are their canine teeth, the pointed teeth near the front of their mouth.
See also: eye, give, teeth
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • give (one's) eyeteeth for (something)
  • give your eye teeth for
  • give your eye teeth for something/to do something
  • give eyeteeth
  • give one's eyeteeth
  • give (one's) eyeteeth
  • bag it
  • bag someone
  • bagged
  • bagging