What was the name of the weight-triggered bomb made famous in WWII ?

It's something like a gen-tin bomb or gem-tin bomb. Google search didn't do anything for me, so I know i am getting this wrong. Usually, a soldier would roll a dead body on top of this bomb. And, when the weight would shift or when the body was moved, the bomb would explode. There are many variations to this bomb, but I'm specifically referring to the one made out of tin cans used in wwII (and other wars, i am sure..)