Do you know who Holden McGroin is? Do you ever find things "twirly"? Do you worry about the size of the WENUS? Do you yearn to be an Ugly Naked Guy? Do you know exactly why gum would be perfection?   Don't worry--Friends: The Official Companion is there for you.  Here at last is the only authorized guide to the television comedy that has taken America by storm, as millions of viewers have enjoyed the ongoing quests of Rachel, Monica, Phoebe, Joey, Chandler, and Ross to fall in love, find meaningful jobs, control their monkeys--in other words, get lives.   Friends: The Official Companion is chock-full of features available nowhere else--like "Friends Dearest," a shocking introductory tell-all by erstwhile friend Marcel the Monkey, explaining the evolution of the Friends species; "Friendsography," a detailed episode-by-episode guide to the first season; "Friendly Words," a collection of unforgettably hilarious lines from the show; "A Little Friendly Competition: The Totally Twirly Quiz"; interviews with the cast; and more than 100 photos in black-and-white and color, many of them never before seen.   So this is it--The One with Everything--an indispensable volume for Friends fanatics and casual viewers alike.