1 definition by David22212122

An Acronym meaning
Sudden Leaving Syndrome.

Sufferers tend to have the attention span of a fish and leave conversations or internet chat. When not given attention or a discussion is not about oneself

But you can only apply SLS to a sufferer when the given person leaves unannounced or a very quick "bye" giving no time to initiate their departure.
Dave: "so.. Emily how's life?"
Emily: "Great at the moment, bit bored with scho..."

-During Emily's reply she quickly Turns around and leaves completely unannounced and unepected during conversation.

Another Example of SLS can be seen in Instant messengers
for example

*Emily Logs on to internet chat*
11:15AM Dave Says: "Hi Emily"
11:16AM Emily Says: "Hi Dave"
11:17AM Dave Says: "Hey what you doing tonight?"
11:20AM Emily Says: "not much mum wont let me goto this party so i think I'll sneak out"
11:20AM Emily Says: "BYE xo"
11:20AM - Emily appears offline -
by David22212122 April 4, 2008
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