Jack-in-the-box-pop-up-artist
A f***ing jerk who shows up just when you need them and leaves before you can f***ing thank them.
My ex showed up at my work like a f***ing jerk and left before I could even f***ing scream.
That guy from the bar popped up at my house and vanished before I could even grab my f***ing coffee.
My cousin showed up at my party and left before I could even f***ing say goodbye.