A friend and I are debating this. Ignore the situation's particulars--in most cases, would this be considered a come-on?
We are in a co-ed dorm, with a co-ed bathroom. The showers are set up as such: a shower with a glass door, and a little curtained area just outside where you can hang up towels and clothes.
Me (female): Is my towel in there?
Him: Yeah. Go ahead, just reach in and grab it.