This pastime resulted in some interesting meeting minutes: “18 assembled, and Frigged upon the Test Platter. The origin and performance were discussed. The Platter was filled with Semen, each Knight at an average did not ‘benevolent’ [donate] quite a horn spoonful.”(1) Masturbation was also key to initiating new members, who had to prove their manhood. In the initiation ritual, the novice would lay his erect penis on the test platter, then “The Members and Knights two and two came round in a state of erection and touched the novice Penis to Penis.”(2)
Source: Beggar’s Benison: Masturbation and Free Love in 18th Century Scotland – Dirty Sexy History