Birth of A Legend

The thought in my mind was blazingly simplistic. How can I possibly finish this?
Already my mind was becoming a hazy mess of confusion, hormones, and aimless ramblings. I had been at my task no longer than two minutes, and yet a feeling of suffocation was already overtaking me.
My friends and family members cheered. They were well aware of the monumental nature of the task I had taken on. To accomplish such a feat would assure my name to survive beyond my actual being. I, especially for tonight, would be a king amongst men. All dames within sight would surely want to bed me. All men and children would cheer my name and hoist me to the heavens.
And yet that thought continued to be the only one illuminated within the recesses of my mind. How can I possibly finish this? But I had no choice but to strive onward. To quit would be to truly fail.
So I hoisted, time and again, to my waiting lips, no longer wishing to receive it, a giant beer. To finish this legendary drink, five gallons in quantity, in fifteen minutes, would gain the entire bar a free round and my face to be PLASTERED and hung on the wall of fame.
The meter on the side of the vessel, today posing as a mug, suggested I still had upwards of one and a half gallons to consume. However, at this point, I doubted my ability to read any measuring device, no matter how simplistic, and so I only continued to chug. I stopped only to breathe, both air and the electricity held within it.
Ten, nine, eight…… The count down had begun; and so with a mighty swallow I finished the last drink. How did I possibly finish this? The cheers grew louder, the room swirled, and then darkened, and I fell precariously into local lore.