The beginning comes from "shred" which on a guitar shreding is playing really good and fast. The ending comes from "fabulous." Together they make a word with such an awesome power but more or less means "awesome"

used in "cool court" from sickanimation.com
"This Phat Lady from Haven in Shredulous"
by jfjrghhghg May 10, 2007
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The plan, calender or schedule for when and/or where to shred, meaning skate or ride.
A "shredule" can be used for planning both skateboarding and snowboarding.
A) Do you wanna go skate tomorrow?
B) Let me check my "shredule".
by Teit Andersen October 11, 2006
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