Me: Really? Why is that funny?
Reto: Because it's something that no one but neo-Nazis wears in Switzerland and Germany.
Me: Huh?
Wikipedia elaborates:
"In the early 2000s, Lonsdale clothing became popular among some European neo-Nazis, allegedly because a carefully placed outer jacket leaves only the letters NSDA showing; one letter short of NSDAP, the acronym for Nationalsozialistische Deutsche Arbeiterpartei, the German name of the Nazi Party. Wearing a brand with no Nazi links in order to express Nazi sympathies helped bypass strict laws concerning the public display of Nazi symbolism. In the Netherlands, Belgium, northern France and Germany, the term Lonsdale youth became widely used to describe teenagers with far right tendencies, and the brand was banned from certain schools in the Netherlands."