To put it this way:
When I get "game over" in a single player game, I can get really annoyed and at worst I'll slap my thigh and try again.
When my brother gets "game over" in a single player game, he will get really angry and at worst he'll throw the controller. He usually needs a break before he can be bothered to try again.

In your many dungeons runs you will meet a lot of people who laugh at their own failings, and you will meet a lot of people who get really pissed at themselves or others when they die. The latter might not take offence at your "funny" macro in itself, but it's fuel on the fire for someone who is already annoyed.