Green’s Dictionary of Slang

to be more precise.

1997		J. Whedon ‘Welcome to Hellmouth’ 10 Mar. [TV script] Gee, can you vague that up for me?
1999		USA Today 23 Dec. 04D: Among other terms: ‘vague,’ as in ‘Can you vague that up?’ (sarcastically, be more precise); ‘a happy,’ as in ‘Ice cream gives me a happy’ (pleasure); and ‘freaksome,’ as in ‘That’s fairly freaksome’ (bizarre).
2001		M. Adams Slayer Sl. (2003) 263: That post made the kind of sense my poor befuddled brain just can’t seem to cope with. Can you vague that up for me?