What the...?

Katrina, still feeling pretty good about kicking ass at the poker game the night
prior(which surprised her because she had never been any good at poker
before)brushed her teeth and wandered out into the house.
Everyone seemed to be there, and she wondered if she had missed anything
important.
There was a squish under Katrina's foot, then the soaking feeling on her sock.
She lifted her foot and saw the dark spot on the floor.
"What the hell! Who did this?" she demanded.
Everyone (but Alota) pointed to Alota.
"It was Tara's fault!" she insisted. She spilled coffee on me!"
Katrina sat down on the floor and peeled off her sock. "This better not stain,"
she mumbled.