I believe there was a joke on one of Russell Howard's comedy DVDs talking about this phenomenon, that Irish and Australian accents are just inherently able to make anything funny, even if it's something as simple and humourless as reading the Bible.
8:50 What if the woman's sex noise was the BRAAT! trumpet noise from Inception ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WniOZT7FlKM.html Or had Talia al'Gul's face and figure, but talked dirty with Bane's voice [Dark Knight Rises] ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Cmm0yDGEDbs.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DR2L4Fue3o0.html