I need to raise the post a millimetre or two. And, of course, it's stuck.
I've released two stuck seatposts in my life and the time spent would still be clearly visible on a pie chart of my lifetime by activities, even if I live to 100 and never do another one.(*Don't worry about your knees - in a few years you'll have lost the 2mm from your legs anyway, and that'll still be quicker than unsticking the pin).