F Yeah 

See Fuck yeah

The F is used in place of fuck to avoid offending someone IRL or violating a TOS on the net.

Woman 1: OMG he punched that guy so hard he fell out the window!
Man 1: F YEAH! I pwned your ass man! F YEEEAAH!!!

F Yeah by Bone June 30, 2005

F’yeah

F”yeah is a contraction of the phrase fuck yeah

Friend: Do you want to join us on the boat this weekend?
You: F’yeah!

F’yeah by MusicCityPhotog July 19, 2020

fyeah 

A faster way to say "Fuck Yeah" is by shortening the word Fuck to just an F sound next to the word 'yeah'

Grandpa: Wanna go to Utah this weekend?
Mormon Grandchild: fyeah Grandpa, I would love to!

fyeah by ChickenChocker69 August 2, 2023