Obviously, 4/20 is a very important day for pot smokers. And IF you decide to partake, you'll probably have to eat sooner or later. Iowa State University Police sent out a humorous reminder that they'll be waiting.

ISU Police posted this photo to Twitter Thursday morning with the caption "You've heard of speed traps? We have weed traps." As of this afternoon, the picture has been retweeted more than 1,800 times and liked nearly 4,000.

Most found the tweet funny and a positive way for officers to ingratiate themselves with students (even joking that it was a "cop trap" and not a "weed trap"):

Others viewed it as a hollow gesture:

Whether or not you agree that smoking marijuana should be considered a crime, we should appreciate the police for trying to approach it in a less-threatening way.