Pop-Pop has an anchor tattoo on his forearm, but he states that he was in the army.
Margo says "I've gotta take a wicked dump" in her first ever appearance in the series during "Intern for the Worse", which is believed to be the first time the phrase "take a dump", slang for defecation, is used in a children's cartoon. Lynn prevents Margo from doing so at that point in the episode, but she finally does so at the end, and in fact, so do the rest of the Royal Woods Squirrels. The collective dumps taken by them effectively undo Clyde's effort to make the restroom at Flip's clean.