Why Facebook is full of giraffes

If you have spent any time on Facebook within the past day just about, you will be wondering: what is up with all the giraffes?
Are they suddenly endangered? is that the circus in town? Is Toys R Ushaving a sale?
No, no and no. (Although reckoning on wherever you reside, the circus may very well be in city.) Photos of the lean, long-necked animals area unit the byproduct of a acculturation that is been sweeping the social network in recent days.
The acculturation invitations users to share a riddle with their friends, UN agency then area unit alleged to send a non-public message with the solution (don't post it within the comments, obviously). Any user UN agency guesses wrong should comply with modification his or her profile ikon with one among a ruminant.
Why a giraffe? it is not clear.
The riddle goes like this:
3:00 am, the buzzer rings and you get up. surprising guests. it is your oldsters and that they area unit there for breakfast. you have got jam, honey, wine, bread and cheese. what's the primary issue you open?
(Spoiler alert: the solution is at all-time low of this story.)
Most users agree there area unit 2 acceptable answers, though on condition that Facebook is associate degree unruly community of one.2 billion individuals, there is some discussion over that.
Judging by some comments on Facebook, some users area unit growing bored with the ruminant riddle. Others area unit creating jokes.
"If anyone shows up at my house at three am that they had higher get a building as a result of i am not responsive the door," wrote one commenter onCNN's Facebook page.
Said another, "I got it right, however the ruminant pic cracked Maine up thus I created it my profile pic."
Then there was this commenter on the Chicago Tribune's Facebook page: "Truth be told ... upon realizing it absolutely was your oldsters you'd most likely open the wine initial.