hot flash

I was taking some shots of Maia when I was inspired to deflect the flash a bit, using my one piece in my hand -- lens cover. I shot it twice and I smelled melted plastic. Sure enough, the lense cap inside -- where it was close to the flash was "impressed" with a flash-like shape. The flash is so hot, it lightly melted the lens cap with contact or near contact.

I was wondering why the flash spelled the words in reverse, "Caution. Surface may be hot." Sadly, the message was covering someone's face. [ha, not likely]