A transgender Starbucks employee was fired after footage caught an altercation involving the worker that allegedly turned physical.

The incident occurred on April 30 at a Starbucks in the United Kingdom when the employee, a biological male who identifies as a trans woman, began to argue with a female customer, according to a report.

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Part of the encounter was filmed and posted to social media.

"Don't ever call me transphobic!" the customer said in the footage. "Ever! You do not know me!"

"You're calling me a man," the employee replied after stepping out from behind the counter. "You're being transphobic, Karen — now get out."

"Karen" is a popular derogatory social media term to insult women, and the comment appeared to escalate the situation.

"Now get out," the employee repeated while continuing to chide the customer as transphobic and clapping in her face.

The woman maintained she was not transphobic and asked for a refund, which the employee refused to give.

"You are transphobic. Now get out," the employee said before telling the customer she was “trespassing now.”

"Apparently, we said something transphobic," a man in the background said.

Recognizing this, the employee approached the man, who was filming, and then lunged for the phone.

The phone was then apparently swatted from the man's hand.

"Let go of me," the man said, according to the footage.

The video of the altercation has received more than 4.6 million views on Twitter.

The account that initially posted the viral video reported Monday that the employee had been fired, citing a U.K. Starbucks spokesperson.

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“The licensee has confirmed that the partner [employee] no longer works at the company," the spokesperson said.

"Starbucks has no tolerance for behaviour of this kind and we are very sorry for the experience that this customer had."