I once sewed through the tip of my finger. Like a dummy, I left the needle in the down position and yanked my finger away...tore the tip of my finger open. :oops:
Thankfully it was at the VERY tip, so the tear was not too bad... It took forever to heal and hurt like crazy. Lesson learned, if you sew through your finger, pull the needle into the 'up' position and remove needle from machine before pulling hand away...