The armpits tag is more nuanced than it might first appear. Different people, evidently, have different assumptions about where "the area ... directly under the joint where the arm connects to the shoulder" (as the wiki puts it) begins and ends.
So, where do we draw the line? I'd like to hear specifically from people who routinely search for armpits or who have armpits blacklisted.
Here are some examples of borderline (in my opinion) cases, all currently tagged armpits:
post #1006360 post #1007731 post #1007451 post #1005116 post #1003557
Feel free to add your own in a reply.
Whatever we decide on, the wiki should be updated to have clear examples of what does and does not count. A tagging_guidelines_illustrated picture would be nice.
Updated by Eppleblam