Represents a measure of time, being the long-term memory of popular culture (and
sixteen year old girls in particular), since both seem to have trouble recalling anything that happened before
last Thursday.
As
a span of time,
Last Thursday lies somewhere between a hundred years ago and the present, and is always followed by last Friday.
It is widely accepted that anything that did not
take place this week took place Last Thursday. That is unless this event took place
back in the day, which is of course a
Wednesday.