As an aside: If BB was one of those friendly LAG chaps (but not LAG enough that I was confident he would raise with overs) I'd check it to him and see what the action was coming back to me. If it's going to be a twenty out circus going to the turn I'd probably just peel and reevaluate the turn / hope to spike. If it comes back raised I can fold. If at least one of them folds I'd c/r.

As a default donking is probably best. If BB raised the donk I'd bet/call on the turn and fold the river UI if he raised.