La gallina turuleca

La gallina turuleca (The silly chicken in Spanish) is a screamer video uploaded to YouTube on December 12th, 2008.

The video is about a kids' show which begins with what looks like a ringmaster presenting to the public (the small stars) the act of the "silly" chicken. After a while the act begins and the chicken starts dancing, until 1 second after (0:40), when a picture of Regan MacNeil from the movie The Exorcist appears along with a high pitched scream.

Controversy
This video gained controversy because some parents have watched this video with their kids without knowing that it contained a screamer at the end. A lot of complaints from the parents that the video had shocked their kids can be found in the comments. The user who uploaded this video (damianplayerx) has also previously uploaded several other videos with screamers.

Link
NOTE : The following video contains a screamer.
 * youtube.com/watch?v=nr-5sd6Mw8E