wide-eyed

"wet behind the ears", naive, hopeful, gullible.

The freshman students were a bunch of wide-eyed youngsters, eager to begin.

seegullible naive

by schoolboyj May 20, 2014

wide eyed and bushy tail

for a person to be alert/striking interest to possibly something they just heard or witnessed.

also meaning to get all worked up (mad) over someones comment

"damn he was all wide eyed and bushy tail when i told him what happened last night"

by vlesh May 1, 2008