There was one time the Thunder God Thor, Loki and his two servants, Thialfi and Roskva, went to Jotunheim to challenge the giants. The king of the giants challenged Thor and his companions. Loki took the first challenge, an eating competition.

Loki was fast fast, but the opposing giant ate everything including the plates, the bones etc. Thialfi was up next, his was a race. He was fast, but the challenging giant won even before he knew it. Thor then challenged the king of giants to a drinking match, but as hard as he tried, he could not finish the drink. Thor was then challenged to lift up a cat, he could not even move it. Thor took on the final match--wrestling with an old woman.

He lost.

Thor was not actually that weak, the king of the giants had used magic to fool them. Loki ate fast, but his opponent was Fire, who devours everything in its path. Thialfi was as quick as ever, but his opponent was Thought, the fastest thing in the world (the fastest thought goes at about 580kmph actually, doesn't sound that fast to me : )As for Thor's drinking match, the drinking horn was filled with the ocean, but he drank so much he created the tides. The cat whom Thor tried to lift was actually Jormungand, the terrible sea serpent which circles the universe. As for the old lady, she was old age itself! Thor put up a great fight, but old age beats everyone in the end...

Well, that's how it goes I think. There may be some errors so......