Risus paschalis: liturgical custom that dates back at least to the ninth century that the Christian priests did laugh the people in the religious ceremonies of the Easter of resurrection by resorting to procedures that we would now consider noisy, as jokes, undressing at the altar mimicking sexual intercourse, touching obscenely sex or even masturbate while people are heartily laughing. The custom existed in Spain, Italy, France and especially in Bavaria, where, despite the reform, the osterlachen or ostergelachter remained in some places until the beginning of the 20th century.
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