The John egg is obviously based off the pizza tower oc rissole (the eggs)

john egg would appear during pizza Time,usually back at the end,you have two options

1.he would be similar to a toppin,so collecting him gives you 5,000 pizza points

2. press x and kill him

if you get him during lap 2,you get double the amount of pizza points you get on lap 1,so you get 10,000 points in total.

john egg would only appear in the fun farm level,and has a 50% chance to appear on other levels,but fun farm is the one level guaranteed for him to appear during pizza time.

thats it