Bone with forward sweep wings? At full forward sweep, you'd have a delta planform much like the Concorde.
Neat B-1 whif on HyperScale - LINK(with more pics)
Wasn't there something similar to this in some of the Dale Brown novels?
I don't know if it returned after, but during the funeral at the end of Day Of The Cheetah a V-tailed, FSW B-1 variant makes a cameo. I don't have my copy to hand but back at What If? in 2006 I said "XFB-5/FB-115 - forward-sweeping VG wings, smaller than a normal B-1, two engines" and I built it with the Academy-Minicraft box-scale kit:
fb-1155_35293778040_o by
Zac Yates, on Flickr
fb-1153_35293778290_o by
Zac Yates, on Flickr
And here are some fresh pics to properly show it off (I apparently never tackled the exhausts):
FSW B-1 by
Zac Yates, on Flickr
FSW B-1 by
Zac Yates, on Flickr
FSW B-1 by
Zac Yates, on Flickr
FSW B-1 by
Zac Yates, on Flickr
FSW B-1 by
Zac Yates, on Flickr
Looks cool, but I hate to think of the burden this would put on stressed-out cabin personnel, always rushing to calm down frightened passengers yelling "THE WINGS ARE COMING OFF!" every time they're altering wing sweep.
Reminds me of Captain Haddock in the Tintin album Flight 714, when the Carreidas jet's wings are swept back!
(Who else wants a Carreidas jet kit?)
One done by SentinelChicken a while back:
It could almost have happened...
I went earlier with a Lindberg B-1A(?):
RAAF B-1A by
Zac Yates, on Flickr