Point completely missed.
We all know the definition of Mexican. It's a person from Mexico. Nothing wrong with that. Now if someone is being lazy and we say "stop acting like a Mexican" are you going to defend that by copying and pasting the dictionary definition of Mexican?
Actually, you missed the point...
You're talking about context, and I mentioned context based on definition.
You're making my point for me.
In context, guitard refers to someone with a specific behaviour pattern.
A ******** (meaning: out of step with the process) behaviour pattern.
Get it?