Goat Simulator 3

Just west of the Brumehill Cemetery, there’s a huge barn with “EGGS” written across the roof. On the south side of the barn is a large food dish and a gold bell. All you have to do is get eaten and turned into an egg.

The easiest way to do this is host a co-op game, stand in the dish, and have another player ring the bell. You can do it in single player if you jump, headbutt the bell, and land in the dish before you hit the ground, but you have to time it right. Take a second too long to get in the dish, and you won’t be eaten.

Here is a screenshot of the map to show the location of the barn: https://imgur.com/a/LCOCcKC

There’s another easy way to get this achievement but it is slightly longer. Just simply find all the eggs in the Egg Crackdown Quest. One of them gives you an item that gives you the ability to turn yourself into an egg. It is the Walking On Eggshells footwear. I don’t know if each egg is randomized but one of the eggs I found in the big city area gave it to me. If you’re doing the quest anyway I’d go this route to get the achievement.

There is a much easier way to obtain this.
Stand in the big bowl and equip the 'Riser' from headgear. Move to the edge of the bowl but still within the bowl itself, use Headbutt on the bell, then back up a fraction to ensure you get eaten.

Beats having to use a second player or trying to jump into the bowl after a headbutt

I recorded a video straight from the Xbox to help anyone who is unsure of how to do it, it took me about 7 attempts.