Meanings of top banana in English

I mean the real top banana in security, not under nobody else?'

Leave it to me: I'm always top banana in the shock department.

Harsh rains have caused tens of millions of dollars in losses for the world's top banana exporter over the past decade.

The world's top banana exporter, Ecuador, reacted angrily and demanded that the EU stick to the agreement to slash its import tariffs on bananas.

Top Banana It's the world's most consumed fruit and spans generations as food for both toothless babies and the toothless geriatric.