This is a fair definition, but some guys would define cruising more loosely: a basic sex hunt, not something you specifically set out to do but rather something you are always doing. We do it on the subway and in the office and anywhere a handsome gentleman might lift his shirt to wipe sweat off his forehead. In our minds, we lift his shirt the rest of the way and tug on the brim of his trousers with our teeth. If you make eye contact with him and discover wordlessly and without complete certainty that you are both interested, then voila!
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First, some background. Shane was 18 years old and a senior in high school. Shane was incredibly attractive. But you need a good mental picture to even come close to doing him justice. Normal build, not thin, but not thick at all.