You read it right. Firkin. When I first heard what they said, I was confused (to say at the least). Were they misquoting Dr. Evil or something? Could they not say the word "freaking"? Did they just make up a name and start shouting it out at the most inapropriate times?!
It turns out that this is really truly a word. The mysterious "firkin" actually means, according to Merriam-Webster...(oh, the tension!)
1 : a small wooden vessel or cask
So, let's try using that word in public.
Two guys are walking down the street, one of them being you, now known as Guy 1. Fine. You won't be known as Guy 1. You'll be Jim. I don't care if your name is Bob, or Steve, or Maeshal, you're gonna be Guy 1.
"a small wooden vessel or cask"
He drops it, and you go to help him. "Excuse me," you say, "but did you drop your firkin?"
The man stares at you, slightly frightened, and he quivers at the sight of your face. "Ummm...." he says, obviously amazed by your new vocabulary word, "...what?!"
See?! People will think that you're soooooo cool thanks to firkin, they'll be confused!
Firkin; use it well, use it often.