Perhaps an indescribable out of body experience, in which, one's self is captivated by the simple beauty of subtleties in life which they previously ignored.
Some say more of a weed come down, but I like to think of it as something which hangs literally from one's self and literally pulls us into another free state of consciousness.
(OR words to that affect)
Please note this is normally followed by waking and baking.
Sensitivity to light
all of these typical of a regular hangover