The word "suck" should not be used very often. It is sometimes considered vulgar or improper.
Originally, it was a mild insult, putting someone down. It came from the idea of piercing a hole (or two at either end) of an uncooked egg, and then sucking or blowing the raw egg outside of the shell, without cracking the shell. Thus the empty eggshell could then be used in some craft activity.
Since no one liked the idea of having to eat an uncooked egg (Yukk!!), "Go suck an egg!" became a popular male slang insult, similar to " Go fly a kite!"
Then its use and meaning decayed and degenerated into the sexual 'blow/suck ' usage termed "Dirty English."
Today's overuse is much more disparagingly insulting, to the point of a socially unacceptable vulgarism, yet very popular among both sexes.
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