The Prancing Cera is a photo featuring Michael Cera doing a sort of skip, or "prance". It became quite popular on tumblr within the first two hours of its first post.
The original picture was put up by Edgar Wright August 22, 2010 on flickr.
It soon became a widespread picture on Tumblr, August 24, 2010 around 1:00 - 3:00 am.
It's unclear who first posted this picture, but a Tumblr was made named fuckyeahprancingcera.tumblr.com. She has been credited for starting it.
A facebook group was then made called Prancing Cera, August 24, 2010 at 3.04 am.
Fuck this shit, I'm prancing.
Are we human, or are we prancer?
Prancers gon prance
Hipster gon hip, Hopstors gon hop
Prancing Cera ftw.
Canadian: Wow, I can't believe it takes me 30 minutes a day just to drive to work!
American: If you think hard, I have to go 45 minutes on road to anywhere!
Mexican: You guys have roads!?
North Americans together: Oh yeah we don't have urban planning...
A coworker who puts on a show for the boss, but does no real work. The bosses' pet,who gets away with murser. As apposed to a pack mule who doesn't look like much, but does most of the real work.
She's a pretty prancing pony and the bosses' pet. The trouble with this place is there are too many ponies and not enough mules.
"Planning a diarrhea" is a humorous way of referring to a planned sick leave from work, especially when it's not backed by actual sickness, but rather to spend paid sick days for things other than sickness.
Diarrhea is used as an excuse for the leave, as it's cumbersome enough to keep one from leaving home, warrants little explanation, and may not require a doctor's note to justify the sick day, as it can go away on its own.