Is Benadryl a controlled substance? No. No. A controlled substance is one that may not be legally dispensed without a prescription or, in some cases, may not legally be possessed or dispensed at all.   Risperidone is a type of medication used to treat a range of psychological disorders, including schizophrenia.
Festivus is defined as a secular holiday celebrated on December 23 that is essentially anti-Christmas, a backlash to the commercialization of Christmas and involves the airing of grievances. The term was first used by Frank Costanza (father of principle character George Costanza) on the American comedy Seinfeld. An anti-Christmas celebrated on December 23 is an example of Festivus.
Purim is a celebration of life that is sometimes referred to as Jewish Halloween or Jewish Mardi Gras for its costumes, festivals and indulgence in food and drink, though both terms vastly water down the religious significance and Jewish history of the holiday.