We'll be the first to admit we're guilty of gawking at others at the gym. (How do you think we figured out how all the machines work?) But the other sweaty Bettys fade into the background as we blast our music and focus on crushing our workout.

That doesn't seem to be the case for this guy, who secretly filmed a woman working out and tried to shame her with the caption "TF she doing." (For those of you who don't keep up with the terms kids are using these days, "TF" stands for "the fuck." Pleasant, right?) The video went viral on the website Worldstar Hip Hop:

She's actually doing a legit exercise—the Jefferson Squat—but that’s beside the point. It's never acceptable to film someone without their permission, and we’re thankful most commenters agree that this is a toxic, all-too-common practice. Here are some of our favorite replies:

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