A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ?

y
suffix Y is applied to the diminutive forms of (usually) mobile names to indicate you have a fondness, or at least a grudging respect, for the mobile concerned. Sometimes spelled ie rather than y. See the draggy, skelly, hunchy.
yeo
noun Generic, gender-independent form of the 'yeoman/yeowoman' level.
You mean..?
interjection The traditional humorous response to any suggestion that there is a real world, and that therefore MUD does not represent the universe in its entirety. "In the real world I'm a student." "'Real world'? You mean..?" The "..?" is short for something like "this isn't real?", but the concept is considered so awesomely horrendous that most addicts can't bear to contemplate it.