Wait a second... What was that?
I'm sure I heard something.
There! Behind that thing - didn't you see it!?
Holy crap, what is that!? It's looking at me!
No wait, hold on a sec... Ah forget it; that's just another postdoc working late in the lab. Don't let it bother you, it just wants attention.
(Yes, I got a bit bored while waiting for my samples to be centrifuged.)