Without any intro I would tell a class to take a blank piece of paper and exactly and neatly write their name in the very middle of the page. Then I would go around to look at them and go "No...no...no!" They would look at me in great surmise. "I meant...backwards!" So painfully as if it were a hard maths question they would backward themselves and ask me how to pronounce themselves. And then with their new "selves" I would get them to invent who they "now" were. They went at this with great gusto and characters born purely form pure sound would be created right in front of me> They're "I" had changed into a hee hee hee "HE" and suddenly there were all these different people running around in their minds. They even drew these new "thems" and the playground resounded to the new sounding Nairbs and Yrams who had sloughed off their usual monikers to be born anew as an inventive character.
I would never not do what I would tell the kids to do...so I became this LLANOD YESPMED who had problems with a border guard somewhere in the 25th century.