"Now what?" is a phrase signifying boredom, a lack of topics to discuss, or a greeting after a brief to intermediate pause in conversation. It is common to see the term "dunno" follow as a response.

When you eat dirt for the first time and leave your family to build a shack in the woods

Repeated in a accusatory string, this bullying and demanding retort is screamed with spit and piss when one woman gains the upper hand in an argument.

A terribly dull planet in the novel "Mostly Harmless", the 5th installment of the "Hitchhiker's Guide to the Galaxy". The planet exists in an alternate demonsion in the location where eart should be and is ahted by all of it's residence.

The feeling you have after tripping hard for eight hours. You're way past your peak and it's not really fun anymore. Nothing looks particularly cool and you have nothing interesting to say. You would like to sleep but cannot. You have a case of the now-whats.