Some fans say they won't watch the next match, yet their alarms never fail them on derby day.
Some people sing when they hear "Blue Moon."
And some haven't decided their allegiance, but they cherish every great goal.
A new Manchester derby is set to kick off at 15:30 UTC at Old Trafford, the home of Manchester United.
Which side are you backing?
Drop the name of your team in the comments and let us know who you're supporting!
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Manchester United
Manchester City
Wurjosamuel
0
Manchester City
jemabeiklr
0
GGMU
Lonbdopstz
0
Manchester city 🏙️
Lonbdopstz
0
City the sky blue 💙
samdklmors
0
Sky Blue and white moon
Yicbikmnsz
0
United Man United
Wacdinrstu
0
Manchester united
Ciheikmntu
0
Red... United
Rizbcdenpt
2
it's always blue cos united has turn to support man city to stop arsenal from winning
Tihadlmou
1
♥️♥️♥️♥️♥️♥️♥️ reddddddddddddddddddddddd
Dancdinry
0
blue moon
Dancdinry
0
blue obviously red sky lol that's not kool
reaclmpsuz
1
city
Dante708
0
The colour is LGBT 🏳️🌈😂😂😂
jamdun009
2
BLUE MOON HAS RISEN. CITY4LIFE
Dapmnprtu
1
United
fabeikstuy
1
My blood is Red
kuscdprsz
1
Red
Dedacopuy
2
city
CEOPerfect
2
The Blue Moon
Yueabcinpy
2
city
cusbcimsyz
0
historically red devils last 20 or 25 years blue
fipailpu
1
Manchester United
OsinashiVivian
0
Forever the smoking gunners, rooting for the king of Manchester, the red devil
shurfc-kimmich
2
The City of Manchester is blue
juhdelmpsy
2
Blue 🔵💙 Forever