Strange question perhaps. But I remember back in Vanilla we had a mage who was fed up with the game or couldn't continue anymore because of Real Life. To sum it up, we went to Mount Black Rock and after some words he threw himself into the lava below (near the entrance to MC).
When I thought I was going to quit forever, I did something similar. Though not that dramatic. I flew as far as my mount would fly out to sea and used every speed and swimming stuff I could use and died deep in uncharted waters.
Obviously I resubbed a few months to a year after that.
After Firelands I really never intended to go back to WoW. So I walked (yes walked) in tier 6 (the actual tier 6 not the transmog, no sunwell pieces duh) with my favourite weapon and shield from Stormwind to the statue of Uther in Western Plaguelands - kneeled and quit. Dramatic much? Yes....
Then I came back for a few months and quit and again and again...
Since Uther I never thought much about quitting in a dramatic fashion. I just don't care....
How about you? Ever done things this silly?