What a fungi

I know there are several blippers who go out hunting for different fungi on their walks.  I didn't have to hunt very far for this one; it is about two feet away from my front door at the edge of a border.  There were two mushrooms together and it looks as though something has been chewing the edge of the lower one.  I had a quick look to see if I could identify it but couldn't find a match; I'm sure there are blippers out there who could tell me what it is!