WASHINGTON (WJLA) - Youtube is full of clips of this so-called "Knockout Game," in which an unsuspecting victim gets punched in the head so hard that he or she is knocked out cold.
And in at least three different cases in New York, New Jersey, and St. Louis, there have been deadly consequences.
Now, a D.C. woman says she was a victim and lived to tell police about it.
The 27-year-old says just after 10 p.m. on Thursday night, she was walking home along a busy strip of 14th Street in Columbia Heights. A group of teens on bicycles came up behind her, and one punched her in the back of the head - hard - before the group took off laughing.
The victim escaped serious injuries, but says she wants her neighbors to be warned that it could happen to them - even on a crowded street.