As the interview concludes, Bakalova asks Giuliani if he’d like to “have a drink” in the back bedroom. He agrees. To be fair, her back is to the camera, and this bit of audio could have been added in post. We hear her say that, but do not see it. In the bedroom, we can see Rudy Giuliani fiddling with Bakalova’s dress before sitting on the bed. We hear Giuliani say:

You can give me your phone number, and your address.

And he reaches up and strokes Maria Bakalova’s back. She appears to be messing with his shirt, and the first time I watched the scene, I assumed she was removing a microphone wire that might have been run up through his dress shirt for the purpose of the interview. Why she would do this for him, I do not know.

Now, the moment that looks most suspicious, and one that I assume will be discussed and debated for days. Rudy Giuliani lays back on the bed. He reaches his hands into his pants, and on subsequent viewings, it looks like he might be tucking his shirt back in. But before anything else can happen, Sacha Baron Cohen bursts back into the room, warning Giuliani that his “daughter” is only 15, and that she is too old for him. Naturally, Baron Cohen is wearing lacy underwear as he bursts in the room. This is Borat, after all. - Source, Well Known Alt-Right Blog, CinemaBlend