1) A person that suffers from the sleeping disorder insomnia
2) Green Day's fourth LP, released after
Dookie. A spectacular album that's as underrated as
Dookie is overrated. Insomniac does not completely have the
fun, don't-give-a-fuck-about-the world sound that
Dookie does (for example : track no. 8, Panic Song, is about bassist Mike Dirnt's panic attacks)
This album should be owned (or listened to) by anyone that considers themself a Green Day fan. You won't be disappointed. If Insomniac isn't as good as Dookie then it's better.
And this is coming from someone who's favorite Green Day album is Dookie.