Everytime without a fail. When someone pats Bakugou's head and slightly push down his head. His tongue sticks out like a toy. It's just him wanting to blow you up but can't

this time when you, Katsuki and all might were out in the streets during winter and fighting against robbers etc

After you finish fighting the robbers, all might pats Katsuki's he accidentally pushed down on bakugou's head and he sticked his tongue out like always. It was adorable