[BrotherMan]

What you need to do is assert your dominance in the situation. Yes, the older silverback is used to being the alpha, but he is past his prime. The next time he tries to interrupt your training with Ms Ladypants, you should rip open your shirt and start beating your chest. Bonus dominance if you pull the cap off your pen and threaten to cut him if he tries to horn in on your action.

Also way back in the long time ago when I was working second shift in the lab we had our first Ms Ladypants intern from a real college. She would come in some time in the afternoon and be there into the early evening doing whatever, ostensibly learning about chemistry or science or something. She was there a couple of months or so without incident (or so I am aware) and then one day I'm borting around on the computer in the lab and she peeks her head in and asks "Can I eat my lunch in here?" One of the ~absolute rules in the lab is that NO FOOD is allowed around the many instruments. (Either your food could get contaminated or worse, the sample being analyzed could be contaminated!) But seeing as the desk didn't have any instruments there, and also I'm p sure she's seen me eat snacks or what-not there, I didn't have an issue. She had tried to enjoy some food down in the break room but all the dudes that work in the manufacturing kept walking in. "They keep staring at me," she said, which is why she wanted to eat lunch in peace.