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1.
Short for "A Scolari's Run". To go to the Scolari's grocery store to buy a drink or snack to finish out the workday.
"Hey, are you going to srun at 3?"
"No, I'm busy working. I'll srun later"
by nick_slo July 25, 2009
 
2.
A series of consecutive 1's.
An s-run is a series of consecutive 1's (ie: 111111). In role-playing games, where dice are used to determine success rates, an s-run is often referred to as a 'Critical Failure'.
by Joshua Daigle June 09, 2006