Lisa Ann Walter feels a little bad for slamming Megan Fox on social media.

The “Abbott Elementary” star clarified her comments after calling out the “Transformers” actress for tagging SAG-AFTRA on Instagram while showing off her “Kill Bill” Halloween costume.

Fox’s gesture was seemingly in response to the union issuing guidelines banning actors from dressing up as characters from struck TV shows and movies and posting the photos.

“Her adding the union on that day, that was the flip-off,” Walter told Page Six exclusively at the Glamour Magazine Women of the Year ceremony Tuesday evening.

“That was the issue. And it’s just bratty, it was just bratty.”

Last month, Walter sarcastically tweeted, “What a rebel,” after Fox, 37, shared a carousel of photos of herself and Machine Gun Kelly dressed up as Gogo Yubari and Beatrix Kiddo from Quentin Tarantino’s 2003 action flick.

“Keep posturing for stupid s–t, pretty lady. Meanwhile we’ll be working 10 hours a day – unpaid – to get basic contract earners a fair deal,” the “Parent Trap” star added.

Megan Fox dressed as Kill Bill character on Halloween
Lisa Ann Walter apologized after slamming Megan Fox’s behavior on Halloween.Instagram/@meganfox

Megan Fox and Machine Gun Kelly at a Halloween party 2023.
The “Abbott Elementary” star previously tweeted her annoyance after Fox tagged SAG-AFTRA on Instagram while posting her “Kill Bill” costume.Getty Images for Casamigos
While speaking to Page Six Tuesday, Walter, 60, elaborated that the union is “not for rich people. This is for the people that can’t negotiate a contract.”

However, the comedian shared that she’s never met Fox, who she surmised is “lovely,” and didn’t realize her tweet would make headlines.

“I didn’t mean for it to be such a big deal,” she continued. “So now I feel bad. So I apologize.”

Lisa Ann Walter.
“Her adding the union on that day, that was the flip-off,” Walter told Page Six exclusively.Getty Images

Lisa Ann Walter.
“That was the issue. And it’s just bratty, it was just bratty,” she added.Getty Images for Glamour
SAG-AFTRA has been on strike since July 14 over an ongoing labor dispute with the Alliance of Motion Picture and Television Producers (AMPTP). It’s the first strike in over 40 years.

Walter was at Tuesday’s event to support “Abbott Elementary” creator and star, Quinta Brunson.

Brunson was honored along with Selma Blair, Brooke Shields, Mary J. Blige, Millie Bobby Brown, Geena Rocero and America Ferrera.