And that is

Why they are never in the same room together.

From the 100% Fact challenge. See all 469 entries (closed)

(.., Fri 24 Oct 2003, 13:49, archived)

unsurprising they look similar
they are brother and sister
( Sunshine Elephant, Fri 24 Oct 2003, 13:50, archived)

and
they are both molded from plastic of course.
( biscuits_alive is totally trying to evolve his head off over here, Fri 24 Oct 2003, 13:53, archived)

but he has had
a great deal of cosmetic surgery.
presumably to look less like he originally did
( daf 's been photoshopping real life again, Fri 24 Oct 2003, 13:53, archived)

or
are they? she sure didn't look like mikey before...
(radja, Fri 24 Oct 2003, 13:55, archived)

they were seen together in that video
you know, for the song they did together...
( new_matt, Fri 24 Oct 2003, 13:56, archived)