Sometimes, Gojo blows things up randomly. Not because he wants to. But because he gets too excited. So excited that his cursed energy causes something blow up. His sweet tooth also plays a part in the excitement, which makes his blood pump way faster than it needs to.

It also happens when he's angry, but that's a once-in-a-blue-moon situation.

The one time he did it in front of you was when he'd been away for a mission and had gotten back not long ago. You came to greet him, leaning up to kiss him. But just as you did, something shattered behind you. When you pulled away, you saw that the mirror in the living room had shattered into pieces. You can see the remnants of his cursed energy there.