The couple name given to Grey's Anatomy characters Meredith Grey and Derek Shepherd. It's only used outside of the show, when fans are talking about them.
Did you see last night's episode of Grey's? You see that McDreamy moment? I love merder!
Merdan is a funny guy who loves his family and friends. He doesnt have a lot of friends but he make sure that does are always in a good mood. He also loves sports but he hates arrogant people.
It's a very used Italian expressionwhich means god is a shit. For example “che male dio merda/What a pain! God shit“ or “mi si è rotto il telefono dio merda/My phone just broke!God shit”