I get a strange sensation throughout my body that I have experienced that exact moment before but in a different time. I will have a slight moment of recognition in my mind but only slight . It's more of an overall body experience -almost like I go back the original time it happened. Sounds weird. Hard to explain.
I think we all experience it to some degree. I believe in reincarnation, so the feeling is strong for me! It's a feeling of doing, feeling or seeing something that in the back of your mind you've seen, felt or done before !
for me it kind of feels like my mind did a backflip and collapsed on itself. At least I think it's deja vu, or something related. It's this really strange feeling I get sometimes, randomly. Then I'm like "hey what's going on?" And I try to think about what just happened and why I had a mind bend, and I just CAN'T remember and it starts to really annoy me and hurt my brain because it is RIGHT beyond my grasp, and I just can't QUITE reach it... And then I give up and try to forget about it :/
In my way of describing it from experience I would say it feels like to me. I'm just standing around thinking hard on something. And it's like I can't think about it, but had my mind set on it and totally forgot. Which upsets me because I HATE forgetting what I were seriously thinking about. You're probably just day dreaming if so than snap out of it.
all of the mental descriptions i agree with... but to add to description, physically, i feel my stomach drop almost, and almost a dizzying rush through my head and eyes (as it's quite boggling and "unreal," almost, and then you can't quite figure how it can be) and then, for me, time kind of freezes, as i'm trying to figure out what just happened before i realize it's deja vu lol