As the players from Northern Ireland and Poland lined up on the pitch ahead of their Euro 2016 opening game, the announcement came to sing the national anthem.
And, much to the surprise of a startling amount of viewers, the song for Northern Ireland is God Save The Queen - just like it is for England.
Northern Ireland having the same national anthem as us completely blew my mind.
-- Tom (@TomHarrison27) June 12, 2016
Today, I got to discover that Northern Ireland have the same national anthem like of England ???
-- Joanna ? (@_JoannaMaria012) June 12, 2016
That realisation got many cogs ticking as fans asked the all-important question: What happens when Northern Ireland play England?!
If England faces Northern Ireland will we hear the same national anthem twice? Will they all sing it together.. twice? I'm confused. ?
-- Vincent Kompany (@VincentKompany) June 12, 2016
What would happen with the national anthem if England played Northern Ireland? God Save the Queen twice, awkwardly?
-- Graham Poucher (@RockyBalbowler) June 12, 2016
So if England played Northern Ireland. Do they play the same national anthem twice? How do you know when it's your turn.
-- Kris (@Kris_Kapcha) June 12, 2016
-- Blake Goodman (@BGoodman1978) June 12, 2016
Some people thought if both teams sang it together, it would be epic.
Hope somehow we get Northern Ireland in a knockout round, that anthem sung together?
-- TomMellor (@MellorFootball) June 12, 2016
-- Sal Sinawi (@salsinawi5) June 12, 2016
Whereas others thought the viral sensation that is 'Will Grigg's on fire' would be a much better fit.
Will griggs on fire should deffo be irelands new national anthem
-- Justin (@jshotton97) June 12, 2016
Can't believe Northern Ireland stuck with God Save The Queen as the national anthem, when they could have had Will Griggs on Fire
-- Alex Crawford (@alexjcrawford) June 12, 2016
Could this song be the answer to all the Euro's problems?
2056. 'So Grandad how did the Euro 2016 violence calm down?'
'Well son it all started with a 24 country rendition of Will Griggs on Fire'
-- Danny. (@McArdle_) June 12, 2016
We can hope.