You get it? Rhinoceros/Triceratops.
I have had this lump since I started doing skull crushers for triceps.
For about 2 years I frequently did this exercise with weights that are quite heavy for me so I am essentially forced to bounce the bar off of my forehead at the bottom.
I now avoid it somewhat by lifting my head to meet the bar and using my neck muscles to 'brake' the dropping bar over about 4 inches distance (hurts and is probably harmful to my neck).
There was a period of at least 2 months where I stopped the exercise, but the lump remained.
It feels hard like my skull and does not depress at all.
Quite possible that additional bone growth has occurred locally there due to repeated stress (I forgot the name of this phenomenon).
Is anyone else here a proud owner of such a rhinoceratops horn (It is ever so aesthetic)?