Any holiday that is celebrated with a LAN party
. It's often done on holidays when students do not have school. The acronym "LAN" is substituted for part of the holiday's name.
Examples: LANsmas (Christmas), New LAN's Eve (New Year's Eve), LANt (Lent), LANster (Easter), LANsover (Passover), LANzaa (Kwanzaa), LANbor Day (Arbor Day or Labor Day), LANoween (Halloween), All LANts Day (All Saints Day), Good LANday (Good Friday), Holy LANsday (Holy Thursday), Holy LANturday (Holy Saturday), Passion LANday (Passion Sunday), LANukkah (Hanukkah), LAN20 (420), LANxing Day (Boxing Day), LANsidents Day (Presidents Day), Fourth of JuLAN (Fourth of July), LANteran's Day (Veteran's Day), Cinco de LANyo (Cinco de Mayo), Dia de los LANtos (Dia de los Muertos), LANmorial Day (Memorial Day), Ash LANsday (Ash Wednesday), LAN Kippur (Yom Kippur), Rosh HashLANah (Rosh Hashanah), LANSgiving (Thanksgiving), LANentine's Day (Valentine's Day), LANada Day (Canada Day), LANhog Day (Groundhog Day), LANtoria Day (Victoria Day), Pi LANproximation Day (Pi Approximation Day), and more.
I always look forward to the LAN Holiday season. It's the only time of year that I get to gather with my nerd friends in my parents' cold basement for Starcraft and get pissed off to no end because no one can seem to set up the network. We never learn from the year before.