" old hand "

 [ "old hand" ]

1: A person who is experienced at a certain activity.

  * e.g.,  ... He's had plenty of experience. He's an old hand at the job. 

 [ "old hand" ]

1: When you are in a Google Meet or a Zoom call and you raise your hand, but forget to put it down so when someone calls on you, you say, "OLD HAND!!!!!!!!!!!!!"

  * e.g.,  ... Teacher: Sawyer, do you have a question? 

 [ "the old right-handed circumcision ploy" ]

1: A tactic designed to divert a person's attention from what is really going on. This entails grabbing any close sharp object with the right hand and circumcising the nearest male creature. Generally this is very successful at diverting attention, especially when undertaken without an anesthetic. We don't recommend circumcising anybody when you are taking drugs, anyway.

  * e.g.,  ... Well, we got away with the bank job by using the old right-handed circumcision ploy on the guard. Even though she was a woman, it did the trick.