A mushroom in Malheur National Forest, Oregon is the world's largest Living Organism by mass, area, and volume. It covers 3.7 square miles and weighs approximately 35,000 tons.
I was so much more interested in this thread when I thought the title said “orgasm” instead of “organism”.
I really thought this was going to be about some poster's mom. Actually, I am a huge mycology nerd. I went to Oregon State for Biology with an emphasis on Mycology. I used to be a member of the North American Truffling Society when I was still in Oregon. I knew exactly what this thread was going to be about.
How about a video: https://www.opb.org/television/programs/oregon-field-guide/article/oregon-humongous-fungus/