All of my kylux headcanons revolve around kylo intentionally pissing hux off with the most petty and inane bullshit he can come up with.
Fucking with hux’s hair before a major speech or meeting? Done it.
Taking hux’s hat and hiding it in random places that hux is too short to reach without help? Done it.
Messing with the clocks so they’re always either one minute too fast or too slow? Done it.
Groping hux with the force whenever he’s trying to give orders? Doing it right now.And he does it all with the sole intention of watching hux get red and flustered as he tries to keep his anger under control and not let kylo know he’s actually getting to him