What is Finske?
1.
A five dollar bill.
Noted in the movie Ferris Buelers day off, in where they are parking the Ferrari in the garage, and he gives the guy aa $5 Bill. He then remarks towards Cameron, Don't worry about it, I gave the guy a finske.
You owe me a finske.
Or, in an effort to communicate ammounts over $5, but still retaining the coolness of using the word finske..I lost a couple of finskes last night playing poker.