When a guy who has never asked for your name or tried to get to know you tells you to wait for him to get off work and then come over to his place, that typically indicates that there are some bad intentions.
In other words, he’s not exactly asking you to come over because he is so incredibly intrigued by you and wants to get to know you.
He is most likely telling you to come over because he wants to be physically intimate.
Yes, he was being dirty when he said that you WILL be surprised.
Yes, your instincts are correct. He wants to hook up.
The best way to deal with him in the future is to ignore his advances.
Avoid talking to him for extended periods of time, even if he grabs your arm and tries to entice you with his words.
Just get away from it.
When he realizes that you are not that kind of girl, he will either stop trying to hook up with you or start regarding you with a lot more substance.