Each one of the characters has a little moment like that in the opening.
Jotaro: lines flying all over the place hitting him in various points
Avdol: Behind Polnareff looking like he’s trying to save him (most likely vanilla ice)
Iggy: Behind Pol as well
Kakyon: stretching his stand to form a defensive area
Joseph: lines flies to his neck
It’s all related to what’s gonna happen.