rumornating

the act of ruminating on gossip. Spending too much mental energy on the negative black-hole of hearsay and slander.

can also be used as "to rumornate". If it's something the whole country seems to believe the bullcrap, we could call it "rumornationing."

roo-mer-nate-ing. Generally a verb.

"I'm having trouble letting go of that weird thing Tina told me, I keep rumornating on it."