He then texted her, saying: 'You called my dog cute, but you were more cute though. If I order another pizza can you deliver it?'
She replied informing him that he was texting her personal number and that he should call the store if he wants another pizza.
Tabitha asked the customer not to text again, but her request seemed to get his back up.
"Damn I was just asking," he replied. "I'd give you a good tip."
He then appeared to show concern that she'd delivered the pizza to him the previous day in high winds.
"I can't believe they made you deliver when there was a tornado. That seems dangerous.
"It was hot though. I was worried about you getting back safely.'
Tabitha's response was: "Then don't order a pizza when there's a tornado warning out you dumb c***."
Her choice of language was certainly harsh, and the customer threatened to report her.
But he retaliated further in a very unsympathetic manner.
"I won't if you send me some pics," he added. "I'm not f****** with you b****, I'll do it."
To hammer home his point, he sent her a screenshot of the dictionary definition of blackmail.
Sharing the screenshot of their conversation, Tabitha admitted that her language might have been out of line.
"OK, I realise this makes me look bad but hear me out," she explained. "He took a picture of my ass when I was leaning in my car to get his pizza and I was still pretty pissed about it.
"This was an "unprofessional" response and I would like to clarify I would never have said any of this to a customer while working.
"But when you sexually harass an employee and then text them outside of work the employee no longer has any obligation to treat you as a customer."
However, if she was concerned that anyone would criticise her actions then she had nothing to worry about.
Fellow Imgur users referred to the customer as "a creepy scumbag" and said that he needed to be told.
"This does not make you look bad in the slightest," one reassured her.
Another said that she'd actually been "pretty chilled" considering his behaviour.