Jammed my finger.

[Perfect Stu]

Numerous times. Yank it back into place. I'm not joking, grab the end of your finger and pull it straight outwards. It hurts to do it, but once it pops the pain will be less and the swelling should go down over time.

Unless the finger is broken, which I doubt because I've done the exact same thing as you described a few times, with a football and once a basketball.