I saw a pair of girls today in tee shirts - one with a message "talk to me. I am not taken" and the other with message "back off. I am taken"?

Do you think messages like these are rather unconventional, even controversial?

I saw a pair of girls today in tee shirts - one with a message "talk to me. I am not taken" and the other with message "back off. I am taken"?
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