In the context of testimony, I'd argue (as a philosopher, not a lawyer) that a mention does not count as testimony and cannot be used against you. Obviously, an observation of the mention could lead the police to consider other avenues of investigation however.
http://en.wikipedia.org/wiki/Use%E2%80%93mention_distinction
In the context of testimony, I'd argue (as a philosopher, not a lawyer) that a mention does not count as testimony and cannot be used against you. Obviously, an observation of the mention could lead the police to consider other avenues of investigation however.