A parasitic worm that eats one's brain and makes them only want toplay Line Rider when one has played too much 'Line Rider'. Is not literal.
If you don'tstop playing Line Rider you're going to get line rider monkey worms in your brain and all you're going to be able to do is play Line Rider.
A British term for anal sex. The Bakerloo Line on London's underground system is shown as dirty brownon the map. To ride the Bakeloo Line means to enter the brown tube and take a journey.