The 'Bragging Song' goes way back (and forward. In 'Protector' Larry Niven added verses from the future:

I was born about ten thousand years from now
When men first land on the moon I'll show them how...

I'm the only tar who's e'er jumped ship
From Vandervecken's crew
And I guess that's just about
The strangest thing a man can do)

(edit)

Like many such songs there are alternate verses lying about. Much like Tom O' Bedlam.

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