Depends, shell or no shell? Then i answer.
In Coca-Cola, for ex., eggshells are disolved.
A Onix Egg appears!
If you do that the pokemon will have a egg.
it will explode
When you put an egg in cola, the acidic nature of the cola dissolves the calcium carbonate in the eggshell, leading to the breakdown of the shell, eventually causing the egg to become rubbery and translucent. This is because the acid in the cola reacts with the shell's calcium carbonate, breaking it down with carbon dioxide gas being released.
the sugar disovles it
The shirt will get stained and ruined
It fizzes up and overflows.
nothing happens
i put just a ditto in the day care and had the action replay code to get an instand egg an i got a missingno
If the starter is evolved to at least its second form then ditto and the starter will have an egg.
what happens when you put a egg in