Yep, it’s quite a common practise before cat walks and photo shoots apparently!
I hadn’t heard it’s about ‘flush’ though, more about just the way you become more confident and overtly sexual when you’re edged. There’s no doubt you can see it in someone’s eyes when they are turned on, so that’s part of it too I guess.
Also edging dulls your appetite so that’s probably why it’s so popular with models!
I read somewhere that a major photographer got in trouble recently for insisting a male model edge before a shoot. Not cool, but supports the rumour.