What makes a grown man blush?

[Anonymous]

I had a conversation with a man. It got sort of emotional because something he did had slightly offended me. His whole face turned red at the beginning of it when he knew we were going to discuss the issue.
Does that mean he has feelings for me? Why would a man blush?

[Bellatris]

Pointing and laughing at his tiny dick. That would make a grown man blush. Not that I have ever done that of course. No, not me ;) :P

[spartan55]

Not necessarily, it was probably due to embarrassment.