The sort of feeling most teenage girls get while walking on the street as they are stared at by older Hispanic (usually unattractive) men driving by in red pick-up trucks.
Often accompanied by a yellow,
crooked smile with missing teeth,
elevator eyes, perfectly symmetrical mustaches,
dirty trucker hats/baseball caps, and practically always, a lawnmower or assorted landscaping tools in the back.
See also: any ex-boyfriend/girlfriend you've broken up with in the past who refuses to stop driving past your house everyday at 3:30 PM, shaking their left fist in remorse; your high school chemistry teacher who always seems put his leg on your desk while wearing short-shorts, giving you a close-up on his saggy balls.