You don't have to eat head
My parents took us to a restaurant a while back. Now when my parents take us out to eat, we eat family style. We order a bunch of dishes and everyone has a little bit of everything. There's a certain Vietnamese dish where the entire shrimp is fried. The head, shells, and all. Usually, people familiar with the dish eat the entire thing. No peeling necessary.
I'm familiar with this dish. So I scooped up a couple, and proceed to devour whole shrimp. Zelda picks up a shrimp and looks at it. I told her that she didn't have to eat it the way that I do. She could take the head off and peel the shell. Zelda, being the ever vigilant daughter-in-law not wanting to give a hint of offending her parents-in-law, said right in front of my mom that she was okay with eating shrimp that way. After she popped a few more in her mouth, she looked over at my mom's plate.
There it was, my mom had been eating the shrimp too, but she took the heads off and peeled them. Zelda screamed out, "You're not eating the heads?!" My mom answered her, "No...you don't have to."