What two things did the Porter discuss, in Macbeth?

In Act II, Sene IV, the Porter regales the audience with Afterlife jokes in the scene following Macbeth's submergence in guilt. The jokes concern a farmer who kills himself to get to heaven and is rewarded with the fires of hell, and an equivocator, one who can see both sides of an argument, finds that he cannot equivocate in heaven.