An action of cowardice. Based on war times, one would shoot themselves in the foot in order to get out of fighting and be sent back home. Commonly regarded as dishonourable.
I asked my brother "Are you going to shoot yourself in the foot?". He did. He is now regarded as an outcast by all of his colleagues
The terrible trio of college students who ride around campus terrorizing students with their Razor scooters. Often seen in parking garages, where scooters are not yet prohibited like skateboards and rollerblades.