Sentence:  ‘Fat' is the word you hear shouted in the playground, or on the street – it's never allowed over the threshold of the house. My mum won't have that filth in her house. At home, together, we are safe. It's like an <WSD>"eruv</WSD>" for the slow and soft. 
Meaning of the word marked with <WSD> tags:  An eruv chatzerot; ritual aggregation of properties that allows Jews observing traditional Shabbat rules to carry burdens across property lines.