I'm the one in the black outfit, on the left in the snow, left in the SCIENCE, and on the stilts when I was a wee boy.
*mum
When a child first learns to speak it doesn't a mo...mo...mom instead the initial forming of the sound is ma. Because of the english language this translates to mum, its just your ridiculous american accent that has you confused.
And again, only with your accent.