Nitrogen? Why not inflate it with air (which is still mostly nitrogen, but supports life)? Then, if it failed to prevent burial, you could breath the contents until help arrived.
So, the Boy Scouts are bad because they're exclusionist? How many black people are in the KKK? (or whites in the NAACP, or boys in the Girl Scouts?) And as I recall, the ACLU fought hard to force the Boy Scouts to admit women and LGBTs. The public rallied against the ACLU then, just as the above poll shows they are in this case. My point is that the ACLU commonly tries to force their radical ideals on, and against the wishes of, the general public.
Idiot proof, med.
Idiot proof, med.
Idiot proof, med.
idiot proof, med.
Idiot proof, med.
Hippo birdie two ewes
Hippo birdie deer ewe
Hippo birdie two ewes!
Idiot proof med.