The act of smoking marijuana, it is used in a form of code, by adding the "ingle" after the first letter of the word, or with use of other words, use to best suit.
Such as dringling= drinking
Smoking Weed= Smingling Wingle
1: Yo what up bro?!, its 4/20, we need to smingle wingle!
2: Why, bro?
3: Because dude, its the Nationingle Smingle Wingle Day, its the day for Wingle Smingling, duh!