(noun) a rapid series of scams, cons, and/or other forms of gainfuldeceit or stealthy theft
The "no-sale" bandit and his cohorts engaged in a scamfest of epic proportions, scoring sackfuls of cash and seven pounds of gold from their hapless victims.
To slay it at a festival. when you're killing it so hard that you're slayfesting!
commonly used in the southern californianunderground house music festival community.