Before Amy left town this past weekend, she gave someone who is working at her house the garage code to get in.
She felt comfortable giving the worker her code because she could change it after. He joked that if she didn’t change her code that he would probably come in and murder her. The show thought he probably felt like he needed to make a joke and it just came out in an awkward way.
Amy laughed awkwardly but did not like the joke. She doesn’t know him; he is just a worker she hired, and she made sure to change the code.