yahoo

exclamation
exclamation: yahoo
expressing great joy or excitement.
"yahoo—my plan worked!"
synonyms:	wahoo, yippee, hooray, hurrah, hallelujah, bravo, hot dog, whoopee, yay, yee-haw
"Yahoo! We won!"

Yahoo
noun informal
noun: yahoo; plural noun: yahoos
a rude, noisy, or violent person.
synonyms:	redneck, boor, lout, oaf; More
barbarian, Neanderthal, brute, thug;
informalclod, roughneck
"her brother married into a family of yahoos"