Crossword puzzle clue "parents to be class"

Sounds you might make when I say "Would you rather watch your parents have sex or have your parents watch you have sex?"

Your parents' parents' music

Like either option in "Would you rather watch a video of your parents having sex or your parents watch a video of you having sex?"

Parents-to-be class

"Class of" class

Class where you might learn about class, informally?

Second in his class in West Point's class of 1829

History class: F -- “The professor ignored my attendance record and class participation, judging me entirely on ___”