Would you tell a stranger of the opposite gender when their zippers down?

The guy who sits next to me in class today had his fly wide open for the entire 2 hour and 30 minute period. It was positively gaping and I couldn't help but stare. Like the flap thing that's normally behind the zipper to cover you up just wasn't there so his boxers and bulge were clearly visible!!! I was too nervous to tell him and I felt kinda bad when he walked out of class, totally oblivious to how badly he was embarrassing himself. (My friends at least got a kick out of the pictures I sent them!) But back to my question-- obviously in this instance I chose not to say anything to him even though I definitely should have. I fell like if it were a girl though I might have let her know. Girls-- would you tell this man? Guys-- if it were a girl with her fly open would you say something? Just curious
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Ok geez guys I didn't expect this kind of backlash. It was funny! Just to give you some context on the whole 'me taking pictures of his open zipper' thing-- I didn't even think to take pictures until I noticed the girl on the other side of him holding her phone suspiciously. That girl even asked me if I noticed his open zipper after class and I was like, "of course!". We had a good laugh about it. His boxers were bright red with little white hearts! I was mesmerized the whole class period lol
Would you tell a stranger of the opposite gender when their zippers down?
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