Casual Fuck. Different to Friends with Befinfits as you are not friends but are classified as acquaintances that's fuck on a casual basis.
by Causal fuck February 9, 2017

by Truther4 November 22, 2021

by Patriot Plumber April 12, 2021

by chadsetti69 February 9, 2022

When you have the irrational belief that you home team with be victorious despite all the bad decisions they make.
DaBears were down by 21 with under 2 minutes to go but my CFS (Chicago Fan Syndrome) knew they would somehow pull off the win.
by MoreDumbStuff November 15, 2020

by BrahmaBull March 30, 2025

An abbreviation for "childhood friend." Meant for online, but never in real life, because that would be weird.
by LuckyFalco November 24, 2021
