So of the past few years I would say Wrecking Ball, Anaconda, and Work were some of the most viral songs(I'm not including Watch Me, Gangnam Style or Harlem Shake for obvious reasons). From countless amounts of meme/vines/videos/quotes of each one.

Which one would you say was the most VIRAL(not the most successful!)

Miley- Wrecking Ball
Nicki- Anaconda
Rihanna f/ Drake- Work

WB >>>>> Anaconda >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Work

work went viral? i must have missed it.

Wrecking Ball > Work >>>>> Anaconda

Work wasn't really a 'viral' hit like WB and Anaconda, but Work is the bigger hit

so in terms of being a viral hit;
WB>ANACONDA>WORK

WB, but Trap Queen had a stronger social media presence than all three.

Wrecking Ball