Top Definition
A group of females usually seen flocking around college parties and / or bars. General attire can be any combination of revealing or skin tight fabrics, or be missing altogether. Average IQ of the group is likely below the standard. May seem to shamelessly fit cultural stereotypes. Possibly inviting, but may be vicious. Approach cautiously.
James: Did you see where Bob went?
Leonard: He got too close to the Slut Cluster. We have to get out while we still can!
James: We can still save him!
Leonard: He's dead, Jim!

Will: Let's go to that awesome bar.
Nathan: Word is, it's overrun by Slut Clusters. You can't get to the tap without getting sucked....in.
Will: Well count me in.
by Wiston November 02, 2013

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