look up any word, like thot:
 
1.
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!”
by Robert Marshall June 06, 2005
 
2.
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
by ymmit May 07, 2004