Stands for: Too Fucking Far. To be used when someone takes an already dodgy conversation too far with a very inapropriate comment.
Guy 1:Your mum is soo hot!
Guy 2: Damn I would love to hit that!!
Guy 3: Dude TFF!!
2👍 5👎
Wow! Lilly from the gym today had a TFF! She has a total fuckable face!