I've had one major one and I threw up like crazy. There is nothing unusual about throwing up during a gran mal seizure.

I tell people to turn the person on their side and then point their mouth toward the ground just in case they do vomit. If they do that the vomit will end up on the floor and out of their mouth. I figured this first aid out 38 years ago, there was no first aid for epilepsy at that time. I teach people with or without epilepsy first aid and what epilepsy really is. The more people understand epilepsy and what to do the less frightened of the condition they will be. My goal is to teach as many people as possible about what epilepsy really is and the first aid for it. I've been teaching for over eight years now and I've helped a lot of people understand it and what to do if someone has a seizure.

Yes that's why that tell you turn the persons head sideways so they would not choke or inhale vomit

Yep. Straight up took a swing at some EMT's when I was 13 again at 15, 16, 18, and then at my mom last week. It's just cause I'm so lost and confused, disoriented, I don't know what is going on and my body just decides that I am in danger so I react badly. I am just not in the right state of mind. EMTs are trained to deal with it, most healthcare workers are. Even I was trained to during my EMT internship.
I ask a bunch of questions when I come back to my normal state afterwards.

Yes, that and many other things can happen after having a grand mal (you can lose bladder control, vomit, lose control of your bowels, become violent). It depends on the person, how long it lasted, possibly how full your bladder may have been. I have grand mals and I usually become violent after, occasionally lose bladder control, vomit about half the time everyone is kind of different. It can be rough.