If a person named 'lee' says something ridiculously untrue, yet he believes it to be true the phrase 'leehap' can be used. This is closely linked to the term 'mishap'.
lee -'ryan giggs speaks wales you know'
friend - its welsh you idiot.. leehap!
lee - 'i like swede material shoes'
friend - 'its suede you fool! leehap!