|’Really? I was in 3 PARA too!’|
Eg: Two fake Falklands veterans back up each others' bogus stories in order to validate their own lies, in the mistaken belief that the other is genuine.
This is a potentially disastrous situation as a certain school of thought opines that this is how black holes and wormholes in the space time continuum are created. There goes Croydon... and everything else!