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1.
A vague message that has been seen on bills and graffiti in multiple countries. Often accompanied with the date 5/19/13, its current meaning is unknown, but some rumors associate it with the Apocalypse.
5/19/13 Expect us.
by electronut August 09, 2010
56 12
 
2.
A term usually sent by hackers through any type of online messaging. It is said if you reply your account might be hacked.
Hacker: Expect us.
by uhurtmybandaid September 17, 2009
4 27