Dirty little holes....
...drilled in the walls.
Zhora is wise to Deckard's ruse of course. Is she just suspicious of everyone, being a replicant on Earth and knowing she will be hunted? Or does she see the nonsense in what Deckard is saying about holes?
"Hey boss, how you doing...Taffy?"
"What?"
"Taffy, are you ... drilling a hole ... in the changing room wall?"
"Yeah, so? So what if I am? Its my club!"
"Well, they're strippers. You book them every week. Why don't you just, like, watch them on stage if you want to see their tits?"
"Buzz off!!!"