I'm too lazy to look at the Mike Morris
video but if that's the one talking about
Milos doing a shot of insulin backstage
and going from looking like nothing
to amazing within minutes then that is
bullshit too.
As far as dangers of insulin, there's a potential
for harm but I haven't heard of anyone going into
a coma. Most of these guys could do a good sized shot
of humalog without eating and be fine. Long acting
insulins are hard to "overdose" on as well. Could do 50 units at night without eating much and be fine. BUT it should be respected, hypo episodes may happen when you lose respect for it and you could make a fool of yourself in public, even if actually killing yourself is pretty hard.