Question

What exactly is bipolar?

Answer 1

having or relating to two poles or outer regions/feet and hands.
"a sharply bipolar division of rich and underclass"

relating to or happening in both North and South polar areas."bipolar species"(of psychiatric illness) seen as both hyper and depressions, or hyper ones only.
(of a person) suffering from (mental disorder where people switch from very happy to very sad).
(of a nerve cell) having two (parts of nerve fibers), one either side of the cell body.
Electronics

Answer 2

That is a mental illness where someone will go from one extreme to another. Like one moment they’ll be the happiest person every then they’ll be super depressed. This is a very dangerous disease because some people become self destructive. There are medications that treat this illness and you can also go to a therapist. Or you can just simply talk to someone about it if you are uncomfortable with the other two options.
I hope this helped! :-)