A person who is motivated to the point that it is retarded. Instead of just yelling answers back to upperclassmen, a motard will scream the answer back until his face turns purple. A motard will also come up with ridiculously complicated solutions to extremely simple problems.
Upperclassmen : " Fish motard, why do they call you fish motard?"
Fish motard: "SIRBECAUSEI'MMOTIVATEDTOTHEPOINTTHATIT'SRETARDEDSIR!"