The answer will depend on who you are and so which country's flag you are asking about.
4
zero lines.
5 lines
Infinitely many.
Fratelli d'Italia is the National anthom and song of Italy.
Canada's national anthom
Teh Store Spengled Boner
oh say can you pee by the doctor we stay
we love japan
National Anthom -Jana gana mana
"Ja, vi elsker dette landet". which translated to "Yes, we love this country"
Well, Darth Vader's theme song and the teams theme song
"Mu isamaa, mu õnn ja rõõm" ; melody by Frederik Pacius, lyrics by Johann Voldemar Jannsen.
Officially it's "God Save The Queen" but if you asked anyone from Scotland the most common answer would be "Flower Of Scotland"
The Star Spangled Banner, written by Francis Scott Key during the siege of Fort MacHenry in Baltimore, Maryland during the War of 1812, adopted as the USA national anthem in 1931.
We all eat cheese till out stomachs explode! We also become Inkas from Inkaland! And the National Anthom becomes: "Cat in the Hat".