Creepers? Sexual harassment? Options

[Tung]

So this morning when I took the public University buses to school, I sat in front of a man I'm guessing in his mid 40's. So he seem like the typical regular man you know. So then the next stop the bus makes, a whole bunch of people came on, and there was this white girl who sat next to him. The first thing when she sat down besides him, the man next to her, his eyes WIDEN. He kept staring at her the entire bus ride, more particular at her breast. I felt so sorry for the girl. I look at the girl's face, and she had the most uncomfortable look ever. Good thing, the man's stop was the next down, and he left. After he left, I said "Dude, did you see that man next to you? He kept staring at you" She goes like "I KNOW! I'm like why did I sit here?!" And we just laughed about it.

So I'm wondering, does this in any way constitute as sexual harassment in any way. Because wouldn't harassment follow the underline definition of making someone feel uncomfortable? I don't know. What do you guys think. I mean, in our work place, you should never make any of your coworkers feel uncomfortable, and if you do, it consitutes as harassment.