I made a thread last night in this section: "Getting Warned?".. Then this one guy -reps me leaves a msg: F**k you fa*... ??
False rep is when the person red rep you but uses the name of another person to make believe that it is the other person that is giving you the reds. From the description you provide, there is no misrepresentation.
If you actually care about you rep, you should never ever make a post about how someone repped you...