Manuel Cobarubies, a Stockton High School student, told FOX40: "(It looked) like a brain to me. I mean at that point, red flags were kind of raised.
"I ended up spitting it in the trash can because I get grossed out by that."
Grossed out: Cobarubies was left with a funny taste in his mouth
Rather than asking for some kind of compensation for the mouthful of organs, Cobarubies just wants his $4 back.
The teen has initially tweeted KFC to ask for an explanation but simply got an apology tweet.
But after a local news channel encouraged their followers to join in, Cobarubies got a call from Richard Ramos, a KFC area consultant, who told him the "brain" was actually a kidney or a gizzard, which is perfectly safe to eat. Even if it is a bit disgusting.
Ramos sent the student his refund and promised to work with cooks at the restaurant to ensure all organs are removed before frying.
But it turns out this is a fairly common problem...
Still, at least they've allegedly got something in place to stop it happening...
KFC have been approached for comment about the validity of this picture.