Related Clues:
- Concept that spreads rapidly on the Internet
- Cultural idea that may go viral
- Viral Internet phenom
- 'You can count on me'
- Song from the Beatles' 'White Album'
- Grumpy Cat, e.g
- Viral Web phenomenon
- Viral Internet idea
- Kid's response to "Who wants some?" ... and a hint to what's hidden in 17-, 33-, 41- and 61-Across
- Re-re-re-re-shared link on Facebook, e.g
- Internet __: viral item
- A trait passed down the generations — clamouring for attention?
- Fast-spreading Internet phenomenon
- Enthusiastic volunteer's cry
- Frequently shared thing