Whod win in a consecutive headbutt contest (cranium to cranium, No Biting Allowed!!!) in a 1 versus 1 style headbutt match.
I think (Sir)Sir has a good chance due to him having alot on information stored inside of his head therefore he has greater cranium area and can do more damage but i also think (MAD)Hampa gets an enraged buff when heis anger and would go beserk and destroy (Sir)Sir with demonic consecutive blows to the skull
I have the upmost respect for Hampa and I think even in his old age he would be a prime competitor in a headbutt contest