From an article appearing on the C4 BB site, Desmond Morris.....
''......When Lisa entered the House, the long-term inmates were shocked. How should they react? A warm welcome, or a rebuff?
In the end they settled for a strategy that has made them look good, superficially at least, while at the same time making the newcomer feel distinctly ill at ease. They offered her a cool welcome.
This is a modified form of the Victorian 'Cut.' The Cut was a device used to deliver an insult without saying a word. As the victims approached you let them see they had been noticed. Then, at the last moment, you turned your head away and walked past them without speaking. This was done towards anyone trying to infiltrate a social group of higher status.
Inside the Big Brother House, the original housemates consider themselves to have a higher status than any latecomer, so they cleverly employed a disguised cut........''
Full article Here