It's not the United States
The only proms we have over here are the musical kind hosted by the BBC and Esplanades. She is going to a ball, a disco or a dance, I don't care which as they are all kind of shit.
( Maximinimus you stick around I'll make it worth your while, Fri 26 Jun 2009, 14:48, archived)

Naah.
She's going to her prom.
( Devil Duck: ( ' )< and his cunning stunts, Fri 26 Jun 2009, 14:50, archived)

aren't they normally referred to as "formals" or "balls" here?
two countries divided by a common language
(likeajackhammer, Fri 26 Jun 2009, 14:51, archived)

Box socials.

You're right, it's the Americanisation (sic) of our language, 6th forms and colleges all round the country have proms now. It's a bit silly really.
( Devil Duck: ( ' )< and his cunning stunts, Fri 26 Jun 2009, 14:55, archived)

Then I wish her luck in her further and eventually higher education.

( Maximinimus you stick around I'll make it worth your while, Fri 26 Jun 2009, 14:52, archived)

Amen to that

( magnum, Fri 26 Jun 2009, 14:54, archived)