Canbal joke?

two mssionaries were canoeng up the river to thier mission post. they get attacked by the canbals and taken back to the canibal camp and put in the pot to cook. they are both praying in the boiling water saying oh God deliver us from this hour of our peril........ the one stops and starts splashing in the boiling water. the other still praying looks at him and says you know they are canibals and that they are going to eat us. the happy one says yeah i know i just took a s h i t in the stew.