Abbott Elementary: Barbara Shares Some Major News That Gets Her Coworkers Riled Up (Exclusive)

Barbara has some good news!

In PEOPLE's exclusive sneak peek of Abbott Elementary, Barbara (Sheryl Lee Ralph) gets more than she bargained for when she shares exciting new information with her fellow teachers in the breakroom.

After Principal Ava (Janelle James) makes a few incorrect guesses about her announcement, including Janine (Quinta Brunson)'s pregnancy, Barbara proudly reveals, "My baby is having a baby! I'm going to be a grandmother!"

As the teachers rush to give Barbara a hug, Ava asks Gregory (Tyler James Williams), "How does it feel now that your girlfriend Barb's fake daughter is gonna be a fake aunt to your ex-girlfriend's baby, which makes you a fake uncle to your 'could-have-been' child?" to which he replies, "What's wrong with you?"

The news circulates and prompts the teachers to reminisce about their own grandmothers, which doesn't end up sitting well with Barbara.

"I had two amazing nonnas. One had eyes like a hawk. She could spot a wire under a wool sweater. The other one hearing like a wax moth, she could hear the rustle and wire under a silk blouse," Melissa (Lisa Ann Walter) says with a smile.

When Barbara nervously asks if all of their grandmothers are dead, Ava assures her that one of her grandmothers is still alive.

"She doesn't remember who I am. But it doesn't matter, because she has the two things that every good grandma needs: hypertension and a moo-moo," she replies as Barbara gives her a quizzical look about her fashion choices. "You'll never find one in my closet, but every grandmother worth her weight in salt has one."

While Gregory marvels at the practicality of a moo-moo, Melissa steps in and notes that "Barbara's too young for moo-moos!"

"One grandchild does not mean it's moo-moo time!" she adds as Gregory admits he wouldn't mind a "men-moo" — a moo-moo made for men.

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Abbott Elementary airs Wednesdays at 8:30 pm ET on ABC.