Or was he making something involving eggs in the kitchen and he jokingly cracked the egg on her forehead before putting it in the bowl to be mixed?


I don't know about anyone else but j generally have to hit eggs relatively hard against the rim of a (hard) bowl or with a hard, sharpish knife in order to break them - comparing that to a soft flesh coveted human body part .. I can only jmagine how hard you'd have to hit it.
There's that, which to me is quite aggressive in a way, then the mess/unpleasantness of having goey crap running down your head/face etc. O fi d it weird, disrespectful, quite demeaning actually..
To answer your question op, if it's a real egg be did this with (and it very much sounds like it, I think posters asking was is a mime without a real egg are grasping at straws);
No, not normal.
And yes, I'd find it very unsettling, inappropriate, potentiallg sore fir the child. Potentially distressing for the child, and not far off abusive.
Is there any other behaviour like this on his part?
Then there's the fact he's drunk and has fine this drunk