Related Clues:

• Gee! To be so inhuman is open to you
• Gee! That's the big mouth of the primate
• Act starstruck, say
• Yawn at the end of King Kong, for instance
• Effect of gravity on a monkey is to yawn
• Yawn, producing good copy
• Hang wide open
• Stare with mouth open
• Bewildered look
• Stare in wonder at page-turner
• Look of amazement
• Open (mouth?) wide
• Open-mouth stare
• Stare dumbfoundedly
• Register shock