Oh those Dutch…
from BBC News:

“Dutch fans are being handed orange shorts to watch the Argentina World Cup match if they wear trousers promoting a beer which is not the official sponsor.
Up to 1,000 fans had to watch Friday’s game against Ivory Coast in underpants after being denied entry because they were wearing the orange lederhosen.”
http://news.bbc.co.uk/2/hi/europe/5104252.stm