I ' ve a very specific thing that annoys the crap out of me . and 1 friend who does it regularly . I live in a small cottage the insulation in the walls is really good , so I never need to have the heating on except for the 1 radiator in the bathroom and when it gets colder as it is starting to now I use the wood burner to have a fire and it warms the entire house . I have been doing this for years . Then there is the 1 friend , who in his entire life has never lit a fire not a campfire , not a fireplace , not a burner , nothing . Yet always tries to tell me how I ' m lighting the fire wrong . I suppose this could be expanded to anyone who gives directions on how to do something despite having zero experience , when the person performing the action has been doing the task for years .