Although Marc Okrand developed the proper grammar and syntax for Klingon, the first words and phrases were actually created by Jimmy (Scotty) Doohan for the first ST film.
This perhaps explains the similarity between the sound of Klingon and the dulcet tones of a Glaswegian who, on reeling back from the pub after a marathon session, discovers 'er indoors has locked the front door thus requiring him to inform the entire neighbourhood—at full volume and in detail— as to his woeful circumstances.