1
general::
Phrase(s): fork something over (to someone)
Inf. to give something to someone. (Usually refers to money.) • Come on! Fork the money over to me! • Fork over the cash you owe me!
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Also, fork out or up. Hand over, pay up. For example, It's time you forked over what you owe, or He forked out a hundred for that meal, or Fork up or we'll sue. [Slang; early 1800s]
American Heritage Idioms