That’s what bugs me about spaghetti as well. Shorter pasta (ravioli, ziti), I don’t have a problem. In fact, I like them better than the longer variety.
Opening your mouth wide for a huge sandwich is another one.
Oh and also messy/crumbly things like granola bars. Stuff that you eat with your hands but crumbs are likely to fall off when you bite into it.
And…super crunchy things…LOL. Like that cereal commerical (can’t remember which one)…where the crunching of cereal in his mouth is soooo loud that he can’t hear someone talking to him.