Some things just are not done – but this idiot did one of them anyway.

"Transformers" star Tyrese Gibson has upset patriotic NBA fans after altering the lyrics of the national anthem at Game 5 of the Western Conference finals on Wednesday.

The 30-year-old actor/singer turned up to sing the Star Spangled Banner at the Staples Center arena in L.A.

However, Gibson, who hails from California, took the chance to sing the anthem and cheer his favorite team at the same time.

He replaced the line "our flag was still there" with "our Lakers were still there."

Now granted, down in Atlanta there is a little tweaking of the final word of the song during baseball games, but the statement that the flag waves over the “home of the Braves” rather than the “home of the brave” still communicates an essential truth that the emblem of freedom still flies over our land. But to gratuitously insert the name of any sports team in the middle of the song is another matter entirely. What next – paid product placement during the anthem?

Hurrah for the fans at the game who booed Gibson’s disrespectful deed.