Explaining to the checkout person at Trader Joes that the two vodka fifths I am getting are for my reef tank and I am not an alcoholic, because my wife did all the shopping there two days ago and I wasn't getting anything else. The checker behind him had heard of carbon dosing before, so I had some corroboration for my story.
At least I was wearing a reefing shirt at the time too.
At least I was wearing a reefing shirt at the time too.