Like many other Jewish mothers, Leah, who lives in the heart of North West London, worries every day about her lovely son Paul who is hundreds of miles away studying at Manchester University.
"Is he getting enough to eat?";
"Will he find a nice Jewish girl to marry?";
"Has he got enough nice clothes to wear?";
"Is he keeping away from people who are coughing and sneezing near him?"; etc, etc.
Today, after much worrying about whether Paul is dressing warmly enough, Leah decides to send him two nice long sleeved woollen shirts - one brown and one blue.
A couple of weeks later, at the end of term, Paul decides to return home for a few days to see his parents. After many hours of travelling on a train, he finally arrives at his parents front door. But just as he is about to ring the doorbell, he stops and thinks, "Maybe I should wear one of the shirts Mum recently sent me. It will make her happy." So he opens his suitcase, takes out the shirt on top, which happens to be the blue one, puts it on, closes his case and then rings the door bell. Almost immediately, his mother opens the door and wrapping her arms around him shouts, "Paul, bubbeleh darling, it's so very nice to have you home again."
"I'm also glad to be home again, mum" says Paul.
"And you're even wearing the blue shirt I sent you recently." says Leah, "But there's one thing I'd like to know."
"Oh, and what's that, Mum?" asks Paul.
"You didn't like the brown one?" asks Leah

bubbeleh: term of endearment (like dear, pet, honey)