The Missionary "Tongues" Story
I have heard a dozen or more incarnations of this story, but those are the central story factors that are always present. As I said earlier, in some church circles, especially Pentecostal ones, this is something of an urban legend. It is always recounted third or fourth hand. I have never spoken with someone who actually claims to have personally had this experience.
The unspoken assumption, and often very clearly spoken assumption, of this story is that egghead cessationists are wrong and the supernatural sign gift of tongues still functions in the church today. Usually, this idea is further 'established' by claiming that while much of the tongues speaking that goes on in many Pentecostal churches is fraudulent, this kind must be real because it occurs in situations that seem to replicate the condition of the 1st Century Church.
2. Tongues did not miraculously preach the Gospel to people in need of an interpreter.