/reads random articles on wikipedia
Mania is the signature characteristic of bipolar disorder and, depending on its severity, is how the disorder is classified. Mania is generally characterized by a distinct period of an elevated mood, which can take the form of euphoria. People commonly experience an increase in energy and a decreased need for sleep, with many often getting as little as 3 or 4 hours of sleep per night, while others can go days without sleeping.
Decreased need for sleep? Hmmm, where could I have heard something like this before.
Attention span is low, and a person in a manic state may be easily distracted. Judgment may become impaired, and sufferers may go on spending sprees or engage in behavior that is quite abnormal for them.
Definitely sounds familiar.
People may feel out of control or unstoppable, or as if they have been "chosen" and are "on a special mission" or have other grandiose or delusional ideas.
"Chosen", you say. "On a special mission", you say.
Their behavior may become aggressive, intolerant, or intrusive.
Some people in a manic state experience severe anxiety and are very irritable (to the point of rage), while others are euphoric and grandiose.
At more extreme phases of bipolar I, a person in a manic state can begin to experience psychosis, or a break with reality, where thinking is affected along with mood.
...That explains quite a few things, actually.
/herpderp should probably stop seeing Eusine everywhere