A Stylized 420 Name for a Pen Pipe.
A type of MacGyver
A Pen that has its parts removed to store & smoke Ganja.
The name originates from the use of pens by Upper Crust stoners.
It was perfect for "classy concealment" of Marijuana especially during increased drug busts in the 20th Century.
When smoked, it looked just like a simple cigarette or cigarette holder.
Watson: "Is that a Pen you are smoking out of"?
Reginald: "More than just a Pen dear Watson, 'tis a Ritz Carlton ;)"
Reginald: "And He'll never know."