At the end of this week's teaching (on UK tax law), I divided the class up into teams and gave them a quiz.
I asked the first team what they wanted to be called.
"Errrr, Team A?" one of them eventually offered.
Then I went to the second team and asked them what they wanted to be called.
"Errrr, Team A?"
"No, that's already taken," I replied.
"Oh! Oh, OK, errrr... Ah! The A Team!"
For the record, Team A won. The A Team came second by one point. The third team, called 'No 'I' In Team', came last by a more significant margin. Obviously too much imagination...