The running back had just three carries in the Lions' 26-17 pre-season win over the New York Jets, but secured a first down after leaping over an opponent to avoid a tackle.
The 28-year-old told the team's website: "It was good to get the crowd going a little bit. I didn't plan [to hurdle a defender]. It was kind of an instincts thing because the guy was going so low so it just kind of happened that way. I could care less about the hurdle, it was just getting a first down.
"I can definitely bring a little bit to this team to where it takes a little pressure off some of the other guys and vice versa. I definitely felt like we took advantage of some of those opportunities today and it was good to see that."
Bush signed for the Lions as a free agent earlier this year, having reached the end of his previous deal with the Miami Dolphins.