CHAIRPERSON
Using a pair of pliers on the private parts of a person is such an atrocious thing that I would have thought that you would be in a position to remember whether they did use it or not.  I mean before you did that you probably had to remove their clothes, at least their pair of trousers?  It's not a casual exercise to press somebody's private parts with a pair of pliers.  It's not like touching somebody on his forehead with your finger, you've got to remove his pair of trousers to reach his private parts and to open up his thighs.  Now you're saying you don't remember if those things happened.