There's not a lot to do when you're just four months old.
Indeed, in some ways, the only option is to hang around and wait for the next stage of your development and the ability to turn your hands or feet to something new.
For example, very soon, you'll be able to put your hands and feet together and crawl along the floor. How exciting does that sound?!
For now, Jamie remains in the hanging around stage. And, if you've got to hang around, you might as well hang around in style.
Thanks to our friend Hannah, he now has his own hanging around apparatus which even allows him to bounce - whilst hanging around.
Don't you just love the hanging around thing's tail?
Jamie thinks it's grrrrrreat! (see what I did there?)