The English language is awash in portmanteaus, words or sounds that merge together to create something new. Spoon and fork combine to make spork, breakfast and lunch join to create brunch. Merging words, sounds or celebrity names is easy. Other types of mergers? Not so much. Today’s show is all about what happens when two things become one - and from traffic lanes, to company buy-outs, to organ transplants, we’ll discover that merging is anything but simple.