My two singles are pretty simple names.
"white bike" for my road bike and "black bike" for my flat bar bike.
Our tandem is named "Snowman". About 10 minutes from the end of Smokey and the Bandit, Burt sees all the trouble they are about to get into and CB's back to Jerry Reid "Snowman" to back off and Burt will take the fall. Well Snowman goes off and says they always finish what the started and they are going to finish the run.
So our attitude on the tandem is we always finish what we start and approximately two years and 3,600 miles later that still holds true for us.