Ruby Unbound Methods: Is it possible to force bind to instances of other classes?

I would like to know if I could force this to happen

class A
  def bomb ; "bomb" ; end
end

class B ; end

bomb = A.instance_method(:bomb)

b = B.new
bomb.bind(b)

currently it throws the error TypeError: bind argument must be an instance of A

I find this very limiting concerning what I can do with these unbound methods, the possibilities are a bit limiting. In cases like these (and I'm not referring only to idempotent functions) it would make sense right? And an execution error would have sufficed, In case I would be handling variables from A which are not replicated in B. I'd really like to know how to force this bind.