My mother would completely ignore me and go about her business, pretending I was somebody else’s child.
“That’s it, no more trial trips from the orphanage. Your going right back!!!”
Yep, works like a charm. My oldest at the age of two had a meltdown at the grocery store one morning. It was a major meltdown that resulted in a crowd. As the crowd developed I became a part of the crowd. One lady turned to me and asked, "Where was his mother?" I calmly replied that I was his mother. Suddenly he realized that he couldn't see me. He then stood up and started calling for Mommy. I stepped forward and quietly asked him if he was through with his trantrum. He nodded. I took his hand and we continued down the aisle.
He never had another trantrum.