Yea Zipp, the site DOES rule.

What happened was that YDoll mentioned this: "So confident in their flip-sides were the Beatles, that they called many of their singles "double A-sides". A nice challenge to other groups."

Which makes sense to me.  Unless I'm missing something and they were both on one side...

Okay, before I go further with this -- Did B-Side mean it was on the back of the record and not the header of the single?

the single that is being released is the A side.
the song on the back (not intended for release) is the B side.
the Beatles started the trend of making both sifdes A sides ie both songs were single releases designed for airplay (even though on different sides of the vinyl)

Quoted from Frightwolf

Did B-Side mean it was on the back of the record and not the header of the single?

Yes and as Kevin has explained a double A side had two heads and no tail...

Incidentally it started with Day Tripper because I think there was a bit of rivalry between John and Paul each one promoting his own song.So it was a compromise.
As for SFF I think they genuinely thought the two songs were equally good.
Yellow Submarine and Something are exceptions in that they were lifted from successful albums and so were linked to two other commercially viable songs.

i read somewhere that the industry (in the US at least) was considering abandoning B sides all together in the early 60's, but The Beatles saw to that.
Sham that CD's have made them extinct - they were a nice outlet for bands who wanted to put something on vinyl but it didn't fit as an album track etc.
Those marketing bastards!

100% true! The only band that even comes close these days would be "Oasis."