In this photo taken on Tuesday, Nov. 25, 2014, sophomore psychology major Ashley Josoff coaxes her rat, "Amelia" up a rope climb during the annual Xtreme Rat Challenge at Nebraska Wesleyan University in Lincoln, Neb.

Scientists have created stoner rats

Scientists, apparently bored with pert, productive rats, added a little marijuana to the equation and found that, as many a teenager can tell you, laziness ensued.