It's supposed to be a bit funny. IIRC traditionally Inuit throat singing was a women's sport or game. 2 women would stand noise to nose and harmonize until one of them cracked up or lost the beat. This is a modern restyling of the music. It's a lot funnier when 2 women do it.. it's not a pretty sight.

http://www.poetv.com/video.php?vid=54166

I believe this is some sort of birth control technique.