Hilarious flight attendant cracks up passengers with safety speech

Nick Dietz compiles some of the week's best viral videos, including a 78-year-old's first time on a rollercoaster, dogs praying before dinner and a prankster brings junk food to the gym. Plus, Southwest Airlines flight attendant Martha "Marty" Cobb delivers a side-splitting flight safety speech. See these videos in their entirety HERE.