Did Yahoo copy Mario when he says yahoo?
YAHOO is actually an acronym, which is why it's capitalized in the logo. Per wikipedia "The word "yahoo" is a backronym for "Yet Another Hierarchically Organized Oracle" or "Yet Another Hierarchical Officious Oracle". The term "hierarchical" described how the Yahoo database was arranged in layers of subcategories. The term "oracle" was intended to mean "source of truth and wisdom", and the term "officious", rather than being related to the word's normal meaning, described the many office workers who would use the Yahoo database while surfing from work"
Yahoo is From Gulliver's Travels by Jonathan Swift, where it is the name of a race of brutes. (derogatory) A rough, coarse, loud or uncouth person; yokel; lout. https://en.wiktionary.org/wiki/yahoo https://en.wiktionary.org/wiki/yoohoo
yahoo (n.) "a brute in human form," 1726, from the race of brutish human creatures in Swift's "Gulliver's Travels." "A made name, prob. meant to suggest disgust" [Century Dictionary]. "Freq. in mod. use, a person lacking cultivation or sensibility, a philistine; a lout; a hooligan" [OED]. The internet search engine so called from 1994. https://www.etymonline.com/word/yahoo