Another meme question. How is this long-gone-but-recently-returned duo known?

Cracked by: shrik, AmK, jowens, Bharath, Mikey, Ananth, Rogi, Manish Achuth, Raghuvansh, Rahulk, raklodramA, Thejas V R, username, v.chandrashekar, Rahul Rajeev, Sumanth Patlolla, Smitha R Maiya, Dibyo, soumya g, dineshk, apar, udupendra, kallukudian, Shwetha Maiya and Logik