This may only be funny to those who have spent a considerable amount of time around a breast pump . . . . It happened like this: I walked into my bedroom to find him sitting on the bed doing this. I immediately turned around, knowing the video camera was on the kitchen counter. Listen carefully at the end of the video when he does a perfect rendition of the "song of the pump".
"Oooo-waah, oooo-waah" -- makes me giggle everytime I see it.