The battle between Facebook and Snapchat is well known. Facebook is trying to do it's level best to kill Snapchat. Last year, Instagram (owned by Facebook) copied the stories feature of Snapchat. It was quite clear that the stories format was originally conceived by Snapchat, later copied by Instagram (admitted by the Instagram CEO). The copy was so blatant that Instagram did not even change the name.
This April, Snapchat ripped off Instagram in return. You'll love how Snapchat killed Instagram with this April Fools prank.
Snapchat turned Instagram’s interface into a Snapchat filter for one day and just swapped out “Instagram” for “Snapchat” up at the top.
The Snapchat filter allows you to take an image or video, and frame it in similar interface to that of Instagram. It does not end there. The joke does not end there. It gives a simulated free "like" from your own mother and 2 others (which Snapchat thinks are the only people using Instagram ;-).