someone without a heart.

A cop or police officer. Is called so because his/her badge looks like it is made out of tin. A reference can be found in the movie "last action hero" with arnold scharzenegger

A male user of methamphetamine.

using tin foil as a condom when having sexual intercourse. also can be used as a verb "tin-manning" a girl.

the character carl may plays in the play
carl may

verb. to turn the bowl upside down on top of your bong stem and suck through the mouth piece like normal so that the ashes go out of the bowl into the water

When you are about to enact in lude activites with your mate, and you realize niether of you have condoms. You go to the kitchen and grab the Reynolds Wrap. Wrap your penis in the tin foil and proceed with your activities.