Top Definition
A noun describing a mischievous person who has foiled you or made a fool of you.
"You're such a ratsack!" or "You little ratsack!"
by Cheesiestcheese December 09, 2011
1 more definition
ratsacks is a term used to define a dirty rat type person or a ratty situation.

"alex kuettel the rat"
by senorfrijole February 25, 2005

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