slutdar

Women-who-spot-a-guy-with-no-ring-and-swarm-him-like-vultures-on-a-carcass senses.

Heightened ability to detect a slutty person among a group of people.

Her slutdar was going off at an alarming rate as the pack of broads descended upon her unsuspecting boyfriend.

Serena: That slut bag Sheila must be here, my slutdar is off the charts!