Use when you see a hot girl or boy. It is usually used as a code wordbetween friends to arouse awareness of the presence of a hot/sexy/bangable person.
where a girl cups her hand to make a telescope shape and the boy finishes in her eye. then she makes a bird shape with ehr hands and shouts 'KAWKAW'
yummy.
girl 1: james and i did an eagle eye yesterday girl 2: wiked, did you shout KAWKAW
girl 1: course, wouldn't be an eagle eye without it