What does this mean(PREFERABLY GUYS ANSWER)?

okay this might be cuz its summer and im wearing shorts and tank tops and stuff. but a lot of the time when guys drive by when im walking theyll whistle or honk. and whenever i walk by a guy around my age, usually a lil older, hell give me the sup nod or if im with a group of friends itll be "ladies" or something. i live in a small suburban town in a small cutesy little housing edition. this has only recently been happening. i dont get it, what does this mean?