I don't listen to, and have never listened to Limbaugh, so yes it was a coincidence.
This may surprise you, but there is an effectively limited number of choices in the creation of a sentence to coherently convey an idea. The word suggestions above your keyboard on mobile work on that exact principle.
It's not a hard phrase to come up with. It's only 8 words.
Nah man, maybe you haven't heard that every teacher wants me to be trans and I'm afraid to poop in litter boxes. I'm lucky enough to be homeschooled by my bleach-boofing parents who were also first cousins.