An underground/subway service that actually works and runs on time
"You're early this morning Eric!"

Yeah boss, managed to get in early due to the wunderground taking only 15 mins rather than 30. Was well quick!
by Doddi September 5, 2007
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Someone who believes the infamous London-based record label "Speedy Wunderground" is the best ever (no that is not a Greep reference, what on earth is a Greep?)

Often located down south in Brixton, probably at The Windmill (a notable place of worship these said neeks go on a pilgrimage to) or up north in YES in Manchester, for some reason SWNs have taken over this place.
Speedy Wunderground Neek: "OMG Have you heard Cavalcade by Black Midi? Best album of 2021!"
Normal Person: "You are a Speedy Wunderground Neek. Please leave me alone."
by NotASWN May 19, 2021
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