It’s one of the most chuckle-inducing trademark claims in recent memory: The North Face Apparel Corp. has sued 19-year-old University of Missouri freshman James Winkelmann for trademark infringement and dilution.

According to its motion filed in December in the U.S. District Court for the Eastern District of Missouri, North Face says Winkelmann, a biomedical engineering student, has caused it “irreparable harm” by producing his parody clothing line, The South Butt (motto: “Never Stop Relaxing”).