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Kindly explain what po means?

"Po" is the word we use here in the Philippines Ma'am @momogrow to show our highest respect in our conversation to others especially to elders and I am sorry I didn't explained it first. Please don't worry. I will not use it again. God bless!.

Aww that is a nice explanation and also a nice word. I was just not familiar with it. Blessings to you too.