Clayface Plants an Early Sign That Matt's Friend Corey Would Betray Him

Spoilers ahead for Clayface. There's a very early sign in the movie that Matt's friends would betray him, and it comes when he gets caught by Zabo's men.

Zabo repeats a line Matt only said to Corey

At the beginning of the movie, Matt wakes up next to Zabo's girlfriend, and mobster Marco Zabo says the line, "Not today, she isn't." Matt said that same line earlier to his friend Corey, when he warned her not to get with this girl because she was Zabo's girlfriend.

We can assume that maybe Zabo and his men weren't at the club that night. What stuck out to me in the scene is that Matt only says this line to Corey, and Zabo already knows he said it. That means Corey most likely already snitched on him.

The moment foreshadows Corey's later betrayal

This foreshadows what we find out later in the movie: Corey actually gave Zabo information, and "this led to him getting a bunch of stories and misinformation from when he was a little kid and where he lived." That repeated line is a very early sign that Matt's friends would betray him.