Three purposes of dating
The second time they see it, it is the same as the first.This establishes that this is the standard way that things always happen.Variations on this trope include uses of 5, 7, 12, and convenient multiples of 5 afterwards (i.e., 25 or 50, but not 35 or 70).
Many popular jokes are based on three Stock Characters (e.g. The first two react normally, the third does something ridiculous (but stereotypically in character).
The Grant Community is also required to utilize FAPIIS to document Terminations for Material Failure to Comply and Recipient Not Qualified Determinations (2 CFR 200).
The CPARS applications are designed for UNCLASSIFIED use only.
In Britain, jokes denigrate either the Irishman as stupid or the Scotsman as a tightwad, while the Englishman is usually the Straight Man of the gag (Unless it's being told by the Scots or Irish.
When an American tells it, Englishmen are stuffed shirts.) This is why most Americans have never heard of Wales.