You’re looking at a classic Christmas dad joke here, not real medical advice. The punchline is:

What do you get if you eat Christmas decorations?
Tinselitis.

This is a pun on tonsillitis (a throat infection) and tinsel , the shiny stuff used on Christmas trees.

For real life: actually eating decorations like tinsel, glass ornaments, LEDs, or button batteries can be dangerous and may cause cuts, poisoning, or serious internal injury, especially in children and pets, and needs urgent medical attention.

Information gathered from public forums or data available on the internet and portrayed here.