[goodnesswins]

I'm a dummy - what is "C-4?"

[Sabertooth]

C-4 is a very powerful, very reliable plastic explosive. Several times more powerful than dynamite.

[Semper911]

what is "C-4?"

Plastic explosive. Very powerful.

[Nitro]

If you are not being sarcastic, and even if you are.

C-4 is a Plastique High-Explosive, very serious stuff.

You know when you see a guy "blow" a door in a movie and they slap on a softball size chunk of what looks like clay?

Well that is C-4 and he is using way too much!