\\

did you know typing this can break urban dictionary? --> \\\

dude don't type \\\

\\

Internet lingo to show confusion and/or dumbfoundedness.

(On instant messenger:)
Robert: so how are you?
Marla: you... are a space monkey!
Robert: \\
Marla: oh, nevermind.

\\

emoticon that represents a flaccid penis while simultaneously indicating disapproval or disappointment of the topic of conversation

Bill: "That girl has herpes."
Sam: "\\"
Bill: "Yeah, but I gave it to her."
Sam: "//"