What triggered this meme?

and.. countless other images.

Update: Hint: Think French!

I like 3 the most. Subtle and awesome :)

Hint: This meme is not from the US and definitely not from 4chan!

Cracked by: udupendra, Rahul Rajeev, Logik, shrey, Bharath, Ananth, achals, Dibyo, Raghuvansh, Manish Achuth, Rogi, dineshk, shrik, Thejas V R and Shwetha Maiya