Where did the expression "It sucks" come from ?

Everybody says a bad situation "sucks" . When something "sucks", what does it suck ? Where did that expression come from ? The expression "It sucks" is crude and it doesn't make any sense . Why is such a meaningless expression so popular ? Why do... show more Everybody says a bad situation "sucks" . When something "sucks", what does it suck ? Where did that expression come from ? The expression "It sucks" is crude and it doesn't make any sense . Why is such a meaningless expression so popular ? Why do people use a phrase if it doesn't make any sense ? Why do people use such a crude phrase ?
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