Shulk's favorite movie is The Matrix and one time his roommate in Smash Hub, Link, thought it would be cool to try the Monado and Shulk could try the Master Sword. As anybody with Xenoblade knowledge knows, the Monado will berserk you if you're not its chosen wielder and if you can somehow avoid berserk status, it will zap you, and if you ignore that, you will puke blood. This is all stuff that actually happened to Reyn and Dunban.
Long story short the TV is now destroyed and Shulk is eating cold pizza with a grumpy look on his face because now he can't watch his movie.
#SmashHeadcanons
Oh, and Shulk + Master Sword would have been less chaotic. He wouldn't even be able to lift it, it's like Thor's hammer or the Sword in the Stone.