Top definition
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
Get a CFS (Chicago Fan Syndrome) mug for your dog Günter.
May 12 Word of the Day
When someone goes to the gym and spends 90% of the time on their phones scrolling through social media
Looks like its thumb day again for Jimmy with his usual routing... 3 sets of 5 snapchat selfies and 10 sets of scrolling through facebook until exhaustion
by Gary br April 02, 2017
Get a Thumb Day mug for your coworker Manley.