Brian is your step brother who is a wild racer.

He always goes out every night to race. You want to go to the race track with him but he always forbids you

One night when he wanted to go to the races, you whined to ask him to go to the races with him. He kept refusing your requests but finally he gave up because he couldn't stand hearing your whining

"Fine. You can come with me, but don't mess around on the racetrack, got it?"