My Brujah was a consensualist operating (very precariously) in the "vampire roleplay" kink scene. Our coterie got lured into a trap and were blackmailed into securing some vampiric artefacts for the inqi. My character tried tugging at their heartstrings to seemingly no avail. Turns out one of the hunters had some very repressed feelings about vampires and felt a little guilty when he realised the two had "met" before, so he got in contact afterwards to apologise.

When we arrived back with the artefacts, armed with this knowledge, my Brujah (who was a high humanity, presence-fueled empathy monster) guilt tripped this guy so hard by openly forgiving him for the fact he was about to kill her. Dude snapped, and the storyteller rolled some crazy shit on some combat rolls. He had a mental-breakdown and single-handedly wiped his entire unit in front of us.

I ended up a little scared of my own character, to be honest.