Oh man.... you guys are a RIOT!!
fine - you got me.... the crows feet gave me away. But that's partly from squeezing my face into that boiler. You may not know this, but my smile was pretty tough to make. My young, little friend, Thomas, was peeping the whole time - he's a bit of a wise-ass let me tell you! He certainly wasn't the "really useful engine" he strives to be.
Oh... my cat took the picture and promptly buried the camera in his box.