Verb: To randomly cut off a user of your service.
From the name of a certain unreliable ISP.
Engineer: “I'm bored, let's karoo somebody.”
User: “Argh, my ISP karooed me three times last night!”
An ISP based in the UK infamous for its monopoly in its locality and amazing disdain for its fee-paying users who can't use another ISP.
I've never met such a useless ISP as Karoo
Karoo: I can't believe it's not better..
Karoo email - spam free 'cos it doesn't work