Even tho it's fun to just stand back and watch the same people fishing for likes time and again, this thread got me thinking, what else might be ban-worthy.

Using HoT while pulling when tank asked you to stop doing it.
Denying to heal someone in group content.
Using shrink to non tanks.
While fleeing/being chased in PvP use rescue on someone to use as meatshield.

The current report/ban policy along with the "top-notch" GM/customer support teams gives endless possibilities.

Hell I'd love to see a "Post the funniest reason you managed to get someone warned/baned" topic actually.