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2.
Simply a combination of "Slow" and "Laggy". Typically used to describe online experiences, such as the speed of an internet connection, or
the smoothness of a game being played.
"I need a better internet connection,
this dial-up is way to slaggy."
by Christopher M. Peterson May 29, 2005
 
1.
Adjective form of the noun slag.
You are so disgustingly slaggy!
by nights in white satin January 26, 2006