I honestly believe this strip would be funnier just about any song besides a damn university fight song. Is it a rights thing? Wouldn't it be funnier if Hattie was screaming "In a gadda da vida, honey! Don't you know that I'm lovin' you..." or the current Billboard hit around the time this comic was probably drawn, "Everybody was kung-fu fighting! Your mind becomes fast as lightning..."
I like blueberry, too.
I can't imagine Hurricane Hattie liking yoga. I've seen people do yoga before and nothing about it screams "Hurricane Hattie should like this!"