Van thinks his name is weird.

Only two episodes with Brock in them come to mind to me.
The first episode is where Reba goes on her first date with BJ's and Brock marriage counselor. Brock tries to describe the doctor, but in my opinion describes himself. He is tan and into his looks. The second episode Brock tells Van he can start calling him by his first name instead of Mr.H. Van says his name sounds like something a parrot would call out if something were wrong.