Backstory - dp and I had a disagreement. Made up this morning, moving on.
Messing around in the kitchen, joking and I flicked water at him.
Sometime later he pulled me in for a cuddle, I laughed, said no you’re going to do something. He assured me not, pulled me in and smashed an egg on my head.
I reacted, sobbed and ran away to clean up.
He thinks I over reacted and insists it was a joke retaliation to my water flicking.
He has since apologised that it hurt (he had to smash it pretty hard) but won’t admit it was wrong to do it.
YABU - it was an egg, get over it
YANBU - this was not funny