Arsenal and Manchester United fans don't usually see eye to eye on much.
Whether that be who is better out of Gabriel Martinelli or Mason Greenwood, or which club has the brighter future, it's safe to say there's a rivalry between both sets of fans - especially on social media.
But for one time only, some Arsenal and Man United supporters have joined forces to make fun of one particular club - Tottenham Hotspur.
The Lilywhites crashed out of the FA Cup at the fifth round stage in spectacular fashion on Wednesday night, losing a nine-goal thriller after extra-time against Everton at Goodison Park.
With that said, Jose Mourinho's side are already in the other domestic cup competition final.
Later this season, Spurs will face Manchester City in the Carabao Cup final at Wembley Stadium, providing Mourinho with the chance to add to his trophy collection and end the club's over decade long drought.
And in a rather bizarre strategy to commemorate their upcoming cup final appearance, Tottenham appear to have released a special key ring.
As spotted by @danielogoun7 and uploaded to Twitter, the message on the key ring reads: "Carabao Cup finalists 2020/21" underneath the club's badge and is available in the club shop.
This idea has brought about a massive reaction from Arsenal, Man United, and even some Chelsea fans on social media.
Take a look at what's been said on Twitter...
@_connelly_said: "Not often you make a final, gotta commemorate the occasion." (with a laughing face emoji)
Dark Saint said: "This is unbelievable."
@ThomasT64754485 said: "This is gold."
