Alright...as i was uploading this i realize it looks like one...but it isnt!!!

This was taken from a large grinding cutter used for cutting steel. The shreds of steel are so hot that they stuck to the back plate and re-welded together into this stalagmite-shaped (or phallic for those pervs out there :P) steel formation...it was so neat looking that I just had to break it off and take it home with me