Two missionaries in Africa get apprehended by a tribe of very
hostile cannibals who put them in a large pot of water, build a
huge fire under it, and leave them there. A few minutes later,
one of the missionaries starts to laugh uncontrollably. The
other missionary can't believe it! He says, "What's wrong with
you? We're being boiled alive! They're gonna eat us! What could
possibly be funny at a time like this?"

The other missionary says, "I just peed in the soup."