AIBU

It means Am I Being Unreasonable if you look up above to the right it says acronyms click on that and see what they all mean.

Welcome to Gransnet

Am I being unreasonable?

There’s a list of Acronyms/abbreviations at the top of the page, below the Forums heading.

Kati hi and welcome to Gransnet. I for one, have never really understood this category, because I kind of think if you're asking the question, you usually know the answer, unless of course you want people to tell you YANBU.

It seems to have originated on Mumsnet, where I gather it is very popular.

If your using the mobile site acronyms dosen't appear on the Active page.