I'll be working at Christmas

Paok, there are a number of very subtle differences. One or two of 'em might be interpreted in three or four diff ways.. For instance, (1) through (4) and (6) might mean, 'I've been thinking very seriously about Christmas,' except (4) is more of a negative implication and (6) of positive

But other subt 'terps do jump out. F'rinstance, 'ceptin' for (3) we can't be sure if 'Mas refers to the entire holiday, a week or two, or just Chris' day

'F course Paok only slightly pullin' ur leg

It's a timing thing. [1] more likely where it hasn't begun and [2] where's already under way

Very strong impli that you always do so