St. Patrick's Day is an Irish cultural celebration that occurs annually on March 17th. Contemporary observance in the United States often involves drinking of green-colored beverages, though historical origins involved religious observation of St. Patrick's feast day. The claim involves multiple transgressions: catching and crucifying a leprechaun (animal cruelty with fantastical elements), consuming an implausible quantity of alcohol (six kegs exceeds typical human consumption capacity), and assaulting a elected municipal official. The progression escalates through increasingly serious infractions.

Cultural historian Dr. Maureen O'Sullivan (Dublin, 2007) examined how St. Patrick's Day has been appropriated and commodified in American culture. She noted that the Chuck Norris fact exaggerates this appropriation to absurd extremes—St. Patrick's Day becomes an occasion for Chuck Norris to commit violence against mythological creatures, consume alcohol at industrial scale, and assault government officials. The joke transforms a cultural holiday into a narrative of pure transgression.

The claim treats St. Patrick's Day as an occasion for Chuck Norris to commit a series of increasingly serious crimes and sacrilegies, all treated as normal celebration.