Ball Ache

Got this out of a ball sized space in the cupboard under the stairs (we don't have any stairs but we do have a weird kinda cupboard under the stairs sized space, so that's what I call it). I asked my 23 year old eldest son, who is stuck here with me, to bounce on it for a bit, before I tentatively lowered my large arse on to it. I explained that it would hurt him a lot less than it would hurt me should it pop. It didn't. I will get fit! I will lose weight! Man I'm craving a full on doughnut covered in sugar though...