Out of the corner of his eye, he saw something slip into your drink from the drunk fool that was getting a little too touchy with you. The marine biologist can't let that go.

"Would you mind?" Jotaro's voice rumbles as he puts his arm around you, glaring down at them.

As they scurry off, he's just too late to tell you that they spiked your drink. Great. He'll have to take care of you now. It'd be improper not to.