Casual xenophobia

Andrew: "What's the best thing to do in Edinburgh in a single evening?"

HL: "Take the train back down to London."

Medical snobbery

James: "My dad is a doctor."

HL: "A real doctor?"

James: "A GP."

HL and Cez together: "No, then."

On pausing at inappropriate times

James, learn to punctuate your sentences properly, or they end up with a completely different meaning...

James: "My girlfriend lives in the forest... of Dean."

and later

"My Dad hasn't got long left... until he retires."