I think he means "goldmine of information". That or there's a few words missing, in which case perhaps he meant "I had completely forgotten that mine own true love had sworn by the mightiest of oaths that he would, with only the strength of his mighty arms, rip the Midgard serpent from the girdle of the earth and present it to me as a token. Unfortunately, he had just lifted its middle section above his head when he slipped on a dog turd and fell, whereupon the snake's enormous body squashed him like a bug. I was inconsolable but then I became a Belieber and forgot him - until these tips about chain tensioning reminded me. Thanks. I've got the cog on now..."
I think he means "goldmine of information". That or there's a few words missing, in which case perhaps he meant "I had completely forgotten that mine own true love had sworn by the mightiest of oaths that he would, with only the strength of his mighty arms, rip the Midgard serpent from the girdle of the earth and present it to me as a token. Unfortunately, he had just lifted its middle section above his head when he slipped on a dog turd and fell, whereupon the snake's enormous body squashed him like a bug. I was inconsolable but then I became a Belieber and forgot him - until these tips about chain tensioning reminded me. Thanks. I've got the cog on now..."