Had an English teacher that did this. Once asked if I could go to the bathroom and he replied with this statement. So I said “Not if you don’t let me.” He rolled his eyes and called me a smart ass, like he wasn’t. Yoi, I hated that guy.

“If I was a werewolf I would fuck you up.”
“If you were a werewolf …”

The vampire’s ability to enter (whether he can come in) depends on his permission to enter (whether he may come in). So he’s right.

Imagine if vampires could only suck the blood of victims that verbally allow them resulting in them loyering everyone to let them eat people