Yeah it's pronounced intresting, but because of the way he worded it: it's so interesting I can't help but fall asleep, he put the emphasis on that so I got it. So it wasn't that badly worded actually. But yeah it's a bit forced, this is what's known as text-only wordplay cos it wouldn't work in audio...but sometime you can get away with it in text

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Fee Fi Fo Fum, now bitch I'm a giant
And your ass is like Jack, but your magic beans is wack
Skills is what you lack
I'm like a Benz, you ain't even like a Cadillac
Ya more like a Reagal
I'm a pittbull and you's a beagel