Obserbation - Jerk-off while looking at something hot, and the person you'

Jerk-off while looking at something hot, and the person you're looking at has no clue you're looking at them.

I was obserbating the new teacher while she was wearing a short skirt.

I obserbated my neighbor through the window while he was taking a shower.

I obserbated the mailman while he was eating a sandwich and looking hot.