According to Osho, laughing at authority is natural after centuries of priestly and political domination, but let your laughter be total, not half-repressed. Total laughter dissolves anger and conditioning, relaxes the whole being, and can open a meditative state where the ego and the 'doer' disappear, leaving pure witnessing in the present. Don't stay entangled with past religions; choose your own authentic religiousness.
If you laugh fully instead of holding back, your joke about the Pope melts anger and becomes peace and freedom.