Sailors and Locals

Sixteen sailors strode into a pub, Then a group of them left to get some grub. Those who remained got into a fight, With some locals who drank there every night. Although the sailors did outnumber, The locals (who were also dumber) Two sailors shy of a ratio of two-to-one, They (the sailors) had lost and the locals had won. But then exactly half who had left for food, Returned to the pub in a foul mood. One local had left, a man named Tor, Until the ratio was the reverse of what it was before, Even though the beaten sailors couldn't fight, The fresh sailors versus the locals, all right! Don't ask me how it went, For I will remain forever silent. But could you determine how many sailors Could be considered failures, Because they went to get grub And didn't return to the pub Never swinging a punch nor taking a fall, Against the locals at all?