Most people are robust. If a man puts his hand on a woman's bottom, any woman worth her salt can deal with it. It is communication. Can't we be friendly?

Thomas, Liz (9 August 2011), "If a man pats a woman's bottom he's just being friendly, says Jeremy Irons", Daily Mail, retrieved on 2011-08-11

Jeremy Irons: If a man pats a woman's bottom he's just being friendly | Daily Mail Online[dailymail.co.uk]