In this paper I present the idea of a kind of externalism different from what is usually considered in the internalism / externalism debate. It is intersubjective in nature, since it concerns representation determined by relations between cognitive subjects. More precisely, it concerns linguistic expression types. The basic idea is that the meaning of linguistic expression types often depends on external factors over and above any external factors that serve to determine the contents of the thoughts of speaker and hearer. In particular, this kind of intersubjective externalism can hold even internalism is true of thought content itself.