bu ne sekerlik ortadaki bey

I am not a native speaker.   I think this means/

"What sweetness is this in the midst (matter in question) sir"

 My try:

What a sweetness is the man from the middle.

how sweet the man in the middle is

i dont know the exact translation but i know that someone asking or making fun of the man in the middle about himself (the man in the middle again)

 Doesnt sound like a question to me...

yeah it is not a real question.

the structure is question but meaning isnt.

şekerlik also means sugar bowl??

may be in this sentence wife is asking her husband about the sugarbowl that she sees on the table.

şekerlik is sugar bowl as an object but not here.

here şekerlik means sweetness, quality of being sweet

yep, its a man sitting between two others