Why do you thing Barney called Stig' Somebody- Something'?

Barney likely called Stig "Somebody-Something" as a way to express his frustration or confusion about Stig's identity or role in their dynamic. It suggests that he sees Stig as an enigmatic figure, perhaps lacking a clear definition or purpose. This playful yet dismissive nickname might also reflect Barney's tendency to simplify complex relationships or situations. Overall, it highlights the quirky and often humorous interactions within their group.