when you go under the map in any world it will often come up with a button. Sometimes it's a button for one of the cannons and sometimes it's an egg. But it's just eggs that are in the shop. There's really no point going under the map.
If you were wondering, that egg was not actually an egg, it was the tech cannon but he couldn’t go in it bc he was dead. I found this out because it was at a platform sticking out and it looked like the tech one. And the “egg” was at the end of the sticking out platform.
Bro you wasted your time, all you needed to do is jump off the barrier then when u died u will respawn in a flying block then jump off and look around u will see the egg and its just a golden egg for 500M+ coins i tried it myself.
"This was so insane! It worked so good I'm not gonna show my inventory!" Edit: for those who dont know this is a joke (wow what a surprise), because surprisingly most of the comments didnt notice at all.
Guys u know u don’t have to do all those steps I just did the last parts and I saw the button although I fell into the void and died so I couldn’t get it