Welding a barrel marked flammable is ok right?

What's the difference between flammable and inflammable?

If something is flammable it means it can be set fire to, such as a piece of wood. However, inflammable means that a substance is capable of bursting into flames without the need for any ignition.

This guy wins the Decorticate posturing contest.

It boggles me how many people die like that yearly. Despite the warnings and videos everywhere these dumbasses keep doing it.