Viking warriors had trouble if their penises were too small or too large.

They raped and pillaged their way across Europe. But Viking warriors were sexually insecure, consumed with performance angst and troubled by the thought that size really did matter. 

Being hung like a Norse was key to social hierarchy and being considered a real man in 10th-century Icelandic society, according to a new paper, "Size Matters: Penile Problems in Sagas of Icelanders," presented to the International Medieval Congress in Leeds n 2004.

To complicate matters further, it was as unmanly to have an outsized penis as an undersized one. In the 13th-century Njal's Saga, the warrior Hrutr Herjolfsson is cursed by a jealous queen with an erection too big for intercourse with his bride.

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