Teeny?

Josh, Dima and I were riding bikes yesterday afternoon when one of the ladies who works in the office at Josh's school stopped in to visit our neighbor and said hello to Josh. His " job" for this week has been to take an envelope down to the office with another kid so as she was leaving he said something like "see you tomorrow" and she said "Ok, see ya Sweetie" Then Josh goes - "don't call me that" and I asked what he thought she called him - he said Teeny. So I explained that she said Sweetie and it's a compliment cause she thinks he's sweet. I had no idea that being called Teeny was offensive.