Skull Bash (Japanese: ロケットずつき Rocket Headbutt) is a damage-dealing Normal-type move.
Skull Bash does nothing on the turn it is selected, other than say that the user lowered its head. On the following turn, Skull Bash will do damage. Once Skull Bash is selected, the user won't be able to switch out until it is disrupted or fully executed.
The user tucks in its head to raise its Defense in the first turn, then rams the target on the next turn.