Andy tries to hold a conversation with his mum without hearing a thing she’s saying, but has Ham listening and miming suggestions of what to say. The end result will have you in stitches. I guess if you’re one of these boys’ mothers you’re basically a world expert in bamboozles and shenanigans by now, so I’m guessing she was just thinking “oh for f**k’s sake, whatever it is I’ll just go with it”.