THEME: celebration of Pi Day
GOOD ONES: Subject of an annual March 14 celebration {and theme} VALUEOFPI
BTW: It's good to see a puzzle centered on a mathematical concept, though I never heard of Pi Day.
That, south of the border ESO [should have used "ESO Beso" which is used in our language]
Farther out? ODDER [normally it would be "further" since the distance is metaphoric, but as the expression being punned is
far out, "Farther out" makes sense.]
RATING:

Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun