What is Yahoo!?
1) Declaration of joy.
2) Seach engine/life engine.
Gretchen: Look on the bottom of this milk carton: "You have won one (1) free hip surgery."
Marty: Yahoo! We finally hit it big, sis!
2) I use Yahoo! to receive e-mail.
While fucking a girl from behind, the multi-tasking male pulls out his laptop, places it on the small of her back, yodels a la the ads for Yahoo! and promptly sticks his dick in her ass and checks his email.
Man I was so busy last night, I had to Yahoo! my assistant.