Creasy:Do you know what this is? It's a charger used by convicts to hide money and drugs they tuck it up their rectum. This is pencil detonator, timer, used as a receiver from the pager. This is C4 highly explosive; you put it all together you've got a bomb, not very sophisticated, but very powerful. [whispers in his ear] Creasy:That's what you have in your ass right now. Don't move! Don't move!

Joyhn W. Creasy (Denzel Washington) in Man on Fire (2004)

Source:IMDb