Just because you know there are a couple of groups you don't remember joining

I made this group because I am a part of so many groups most of which I don't remember joining then you go "hmmmm can I be bothered to find the ones I don't want and leave them?", (Including one that was in russian, Considering I don't read or speak Russian I was surprised I had accepted it)
So I thought I shall make this little private group to invite people who are like me and just go sure why not then later go "Why am I part of this group again?"
(this is totally a Welsh group but we never get on the country lists so the UK it is)