trigger machine

a person or thing that constantly triggers you. A trigger machine can be anything you want it to be. Most of the time, trigger machines are your parents, teachers, or annoying friends. You can joke around with your friends and call them trigger machines.

my professor is a trigger machine because he keeps the class late all the time.

Vika: Elly, you are such a trigger machine!
Elly: Why?
Vika: You're always late to school!