Hmmm...at first I thought this was a catch-22. But does "drowing" always mean to the point of death?
Depending on your point of view, or perhaps the splitting of hairs that the actual tense of the verb "drown", in context, is *always* future, used with "will", unless of of course it's the interrogative "could".
Even "you could drown" - is a future reference.
Okay, okay. So all that to argue that MAYBE you "can" drown - in the fountain of eternal life - but you would do so infinitely.
HELL NO! Could you imagine an infinity of the drowning sensation??? The only time torture like that does not eventually end - usually in death - is Hell.
Oh, or maybe Abu Ghraib or Guantanamo. ;)