Tea, Earl Grey, Too Hot
I burned my mouth on Korean food today. The food was still literally boiling when I started trying to eat it. It was a bad move.
The smoothness of Picard's head is probably exactly what you'd get after scalding the shit out of your hard palette with a fresh tea, earl gray, hot. I know that in two days' time, the inside of my mouth is going to be sloughing off like skin off a borg in hot tub.
Worf's forehead had to have been inspired by the roof of someone's mouth. Picard, on the other hand, has a perfectly formed head, as if Morgan Freeman had narrated it himself. Quark (and I know I'm mixing my Star Treks) must have been inspired by chewed gum, or maybe a tomato.
Cheese burns are really the worst.