Gary's Thinking on Si's imaginary friend who he's convinced is real

18/10/2016
Most kids have an imaginary friend at some point in their life, but is it normal for an adult to have one?
 
Well it turns out that Si has a long term imaginary friend of his own - his name is David! Si says they've been to concerts together and even stay at each-others house when they're in town... But Gary's not so sure about the whole thing.