One of my friends who is a native speaker once said the sentence:
I wanted to gorge myself, gorge I did.
I may not remember what's the exact sentence he said, but the sentence structure should be similar.
The part I am curious most is gorge I did. The word gorge is a verb. How come the clause I did could modify a verb? What's the grammar behind? I rarely see this kind of the sentence structure, and if it's correct, under what circumstances it should be used? Thanks!