You're back in high school, i assume most of you aren't high schoolers still, and some kid's bothering you. Maybe his voice is annoying or you don't like the way he walks, maybe you woke up pissed and swore to attack the first living thing you cross, I forgot why I did it, but either way you punch him hard the gut and shove him to the floor. As he's getting up he utters out 'You just set off my trap card'
What do you do next? His tone of voice and environment left to the interpreters interpretation. Namely, you.