Here is a peculiar passage in which we find Bonaventure telling a joke about bishops (to make a serious point, of course):
The King of Anglia asked a certain bishop what the two horns on his mitre signified. He responded, and well, that they signified the Two Testaments, which bishops ought to know. "And what do those two hanging things (pendicula), which hang behind the back, signify?" He responded that they signified ignorance of both, 'because we know neither one nor the other, but throw both behind the back.'" And in this he spoke badly.
[Bonaventure, Collationes de Septem Donis Spiritus Sancti, Collatio IV de dono scientiae, 17.]