I get those all time actually they are kinda weird like everything goes black and all tingly and such. When it happens to me I just take a couple deep breathes and it goes away. But sometimes I have to hold on to something otherwise I'll fall over, but I have grown used to it. Actually sometimes it's rather enjoyable kinda like a really harsh trip that only lasts a few secs.

__________________
Don't talk so much, but watch instead and see where things go.