This happened about 18 months ago. We were arguing (about something minor) and he got really cross, picked up a glass (we were sitting next to one another on the sofa) and said that he wanted to smash it and shove it into my face.
He didn't, and has never been obviously violent (has slapped my hand away from something twice, occasionally pushes me but not hard).
I don't know how normal or unusual this is.
He said that he didn't know why he said it - just that he was really angry at the time.
This was 18 months ago but I keep thinking about it.