Did you hear him??
Lenny Bruce had a routine about a man who is brought to a room where he proclaims that he would never betray his country. Then he says (I'm paraphrasing from memory), "What are they doing to that guy over there? Why are they putting that funnel in his ass? What are they doing with that molten lead? They're pouring it in the funnel? The funnel that's in his ass? They're pouring hot lead in his ass? They're giving him a hot lead enema? Okay, I'll tell you anything. I'll tell you about my mother. I'll make up secrets."
I heard a variation where Bruce says that when faced with the hot lead enema, he would make a shoeshine rag out of the American flag.