If you don’t have anything nice to say, don’t say it to Aly Raisman.

The 22-year-old gymnast called out an unnamed male Wednesday on Twitter following an uncomfortable interaction in real time.

Lady at TSA: "Gymnast? I recognized u by ur biceps"
Man at TSA: "I don't see any muscles" & continues 2 stare at me
How rude & uncomfortable

— Alexandra Raisman (@Aly_Raisman) May 24, 2017

I work very hard to be healthy & fit. The fact that a man thinks he judge my arms pisses me off I am so sick of this judgmental generation.

— Alexandra Raisman (@Aly_Raisman) May 24, 2017

If u are a man who can't compliment a girls 💪🏻 you are sexist. Get over yourself. Are u kidding me? It's 2017. When will this change?

— Alexandra Raisman (@Aly_Raisman) May 24, 2017

Raisman, who appeared in the 2017 Sports Illustrated Swimsuit edition, continued to describe the individual’s “rude” behavior.

He was very rude. Staring at me shaking his head like it couldn't be me because I didn't look "strong enough" to him? Not cool.

— Alexandra Raisman (@Aly_Raisman) May 24, 2017

Though some followers called Raisman’s comments “entitled,” the Olympian countered she had every right to express herself.

“I’m not entitled just stating he hurt my feelings,” she tweeted. “He didn’t have 2 say anything at all. I’m allowed 2 be upset if someone is mean.”

Raisman has become a model of body positivity among young women following the 2016 Olympics in Rio. When asked about her decision to pose for Sports Illustrated, she said she wanted to honor the skin she’s in.

“I love my body. I can express myself in any way that I want,” Raisman told Motto. “But that doesn’t give anyone the right to judge me. I think being a role model is about being a kind person.”