I've got I've that looks a bit like this. ATGATT means a full-face helmet. That's why I have a face, on account of using it for an unconventional braking technique after a high-side caused by getting sideswiped by an SUV.
Oh, I was talking about using my face to reduce my speed as I was going down the highway, with my bike catching up to me. No brown pants but a good 18hr hospital stay.
That's why even though I ride a cruiser I wear a full face helmet. I am glad there are more casual looking full face helmets instead of only sport bike looking ones. No more excuse of "it ruins the style" or whatever.
Yeah I am not saying don't wear a helmet if yours is expired, a 10 year old helmet is definitely better than no helmet. But if your helmet is expired and you are in a crash, it could affect your legal proceedings/compensation and increases your chances of getting a head injury. Afaik the part that actually expires is the foam that actually protects your head from head/brain injury.
I rode for about 15 years with expired helmets I would get from thrift stores and garage sales before I found it they wouldn't help much in a crash. I was, however, in a minor crash where the expired helmet (Shoei) held up and probably saved me from a concussion. So better something than nothing.