Hi all, Well, here's what happened on my LHR-ATL flight today. I was seated on 18E, an aisle seat in the middle section and the last row of EC on the 764. The middle seat was open and a nice lady who frequently visits the UK from AZ was in the other aisle seat. There was a couple seated behind me and the husband, a rather large individual, was seated in the aisle seat directly behind me. Once airborne, his wife crawled out over him and returned with juice as he was diabetic and needed some food or juice. She then proceeded to crawl over him again, pushing my seat forward, causing me to turn around and ask her to be a bit easier with the seat. He then abruptly came toward me from his seat, telling me not to speak to his wife and that he needed the juice. He also motioned as if he'd throw his juice at me twice. It is the first time in nearly 700k miles with Delta (or in life) I felt bullied and thought I was going to be assaulted on a plane by another passenger. Concerned and upset, along with a sense of disbelief, I let the FA's know what he'd done. The wife tried to play up the fact he was a diabetic, but I'm not sure it justified his behaviour towards me. Later in the flight, the same man became agitated by the person in 18F who was typing on their laptop. He began tapping a piece of plastic on my armrest and when I turned around to see if there was an issue, he mumbled something about not understanding why the typing did not bother me; I wear noise cancelling headphones and returned to watching a movie. He stopped for a few minutes and then began heavily messing with and tapping on his tray table with the piece of plastic, again commenting on the typing. The passenger in 18C proceeded to let the FA's know of this incident, but he was quiet by the time they came up to our row. The crew on my flight made a concerted effort to address the situations with this passenger professionally and promptly. It was certainly one of the more unusual series events I've had happen on any flight!! Alright, time to get some sleep after a frustrating day!! Who needs fiction when reality can be crazy??