You beat me to it.
I think it's call the "Flashy Thingy".
And some times I really wish I had one - to use on me...and on others as necessary.
For some people, alcohol serves much the same purpose...
Jay: Did you ever flashy-thing me?
Kay: No.
Jay: I ain't playing with you, K. Did you ever flashy-thing me?
Kay: No.