Gallager's Angry Dragon
A guy goes full beast mode and instead of punching the girl, he bonks her with a hammer like she’s a rotten egg. Breakups are the main reason this happens, and it’s usually fatal.
He bonked her with a hammer so hard, the sound echoed through the whole block.
My cousin’s ex did the Gallager’s Angry Dragon and she ended up in the hospital with a headache that lasted a month.
That hammer hit her so hard, it felt like a surprise party from the inside.