I think what BCAC is trying to say is that on this forum (and it is a term which was coined on this forum) "Tank" is used to describe a heavy weight wool 8 yard kilt. He is simply correcting your use of the term.

I don't think that warrants playing the "Kilt Police" card any more than when I correct people who call garter flashes "flashers" (which means a whole 'nother thing when you are wearing the kilt!).