Enjoy all the best viral videos of December 2015 in this awesome compilation! We ended the year strong with massive cats, genius self defense techniques, and more. br SUBSCRIBE for awesome videos every day!: br LIKE us on FACEBOOK: br FOLLOW us on TWITTER: br Short vids on INSTAGRAM: br Shorter vids on VINE: br WHAT TO WATCH NEXT: br Top 5 Friends' Clips: ... br Top 100: ...