.
Start flushing, spraying water. Get the car wet like it's been sitting in the rain for a few day.
Then blast off any egg residue and shells, then wash as normal.
Any damage after washing and drying is a done deal.
Hope you don't find any of these...
Imprint Chips - Chips in the paint caused by a thrown egg
When an egg is thrown at a car's painted panel, the force of the shell impacting and breaking up against the paint leaves a very specific type of chip pattern I call Imprint Chips.
Imprint Chips
Fixing Imprint Chips is very difficult because there are usually lots of them in varying sizes including very tiny chipped areas.