Twitter is, like, so cool!

"s.v. TWITTER:

2. It is transferred to any person or thing that is slender or feeble. It is said of a lank delicate girl; 'She's a mere twitter,' S."

--Entry in the above dictionary cited in the review by Robert Crawford of Susan Rennie's JAMIESON'S DICTIONARY OF SCOTS: The story of the first historical dictionary of the Scots languages (304pp. Oxford University Press), The Times Literary Supplement (January 11, 2013),  p. 11 [Please note that Professor Crawford does not specify in which edition of the Dictionary this definition appeared -- JB].

--Above image (the Pope twiteering) from; below from