It's been noted by some that NASCAR's 'Boys, Have At It' policy is murkier than ever after officials came down hard on Kyle Busch last week at Texas but didn't react in a similar fashion to other instances of retaliation.
The line between acceptable and unacceptable, some drivers have said, is difficult to find.
But don't count Jeff Gordon among that crowd. Gordon insisted there is a clear line after the Busch incident.
So what is it?
"You just saw it," he said. "... When you know that you didn't do the right thing, then you know there are consequences."
Gordon said he would fully expect to be punished if he did something similar to what Busch did to Ron Hornaday Jr. at Texas.
The biggest factor in the incident, he said, was that it occurred during a caution period.
"To me, the caution flag being out is a huge part of crossing the line," he said. "There's plenty of times when guys deliberately wreck one another – it happens all the time.
"But a lot of times when that happens, it's a judgment call. It's not a judgment call when the caution comes out."