For years, since my first daughter was a tot, I've had the habit of singing Darth Vader's Theme (da da da, da daDa, da daDa) as my kids march to their room after a bath.
I don't know why I do it. Just something about seeing a little toddler who can barely walk, wrapped up in an oversized towel, solemnly marching from the bathroom to the bedroom where I dress her/him, makes me think of that tune. And singing it keeps them moving.
The first five kids never had a problem with it. Last night I was finishing up with the little "psycho toddler" when she looked up at me, scrunched up her little face and said:
"Stop singing that STAR WARS SONG!"