Vomit In ("shock and hurl")

[Bapopik at AOL.COM]

   Some people are staging a "vomit in."  The Drudge Report has called it
"shock and hurl" in a headline.
   I know "vomit in" is related to "sit in," but shouldn't it be "vomit out"?


http://www.sfgate.com/cgi-bin/article.cgi?f=/gate/archive/2003/03/20/heaving.D

TL

San Francisco protesters stage a 'vomit in'
<A HREF="mailto:feedback at sfgate.com">Bay City News</A>       Thursday, March 20, 2003

08:41 PST -- In a unique form of opposition, some protesters at the Federal
Building staged a "vomit in,'' by heaving on the sidewalks and plaza areas in
the back and front of the building to show that the war in Iraq made them
sick, according to a spokesman. Many of the approximately 300 protesters
demonstrating at the building at 450 Golden Gate Ave. attempted to block
building entrances. (...)