Should I do something fun or just blurt it out? lol

Age of students? That will make a difference.

I teased my pregnant coworker at 6th grade that she was an ideal role model to teach sex ed. "This could happen to you!"

I had a professor who never really wore maternity clothes and didn't tell us. Guess she thought it wasn't our business but it was awkward.

She looked big and pregnant but in regular ill fitting clothes.

they're junior high and high school so about 13-18 yr olds

Ddaisy we were teasing the FACS teacher about her superb teaching of Child Development; we have a student in the high school pregnant.