eye stalks
Noun: Alien sight organs. Basically, they are muscular stalks containing eyeballs, or at least, they are tentacles designed for seeing.
I once met an attractive Purplonian woman with lots of eye stalks and tentacles.
Eye Stalking
The act of stalking with ones eyes.
Person 1 - Are you still eye stalking that waiter?
Person 2 - Yep.
Person 2 - Yep.