Official Fifty Shades of Grey Collection. This spanking ruler is perfect for beginners who want to experiment with bondage and gives you every excuse to get up close and personal. This Fifty Shades of Grey and lsquoSpank Me, Please and rsquo ruler is part of the Official FSoG Pleasure Collection and is made from high quality wood that keeps your partner in their place. The markings feature centimeter and inch calibration and the Spank Me lettering to the back makes this a cheeky addition to your box of bondage tricks. This spanking ruler is approved by E.L James herself and is perfect for couples who are trying bondage play for the first time.