I first started fancying an ex-girlfriend because of her feet. A group of us would be at her house and if she didn't have shoes on, the shape of her feet in her socks was a perfect, elegant wave. So I understand the admiration.
Having said that, I think we're missing a significant point - he hasn't actually seen lomster's feet. He said "you look as if you have..." - THAT's weird. It's like saying, "I bet you've got a lovely belly button" or "I'd wager you have a fine pair of knees..." - it betrays the fact that really he's admiring something else to the point where he assumes other parts of you will be as attractive. For all we know, you've got hideous feet
For all the talk of one liners I've never heard one used, and never heard a first hand account of them paying off. Compliments are fine, but they have to be genuine and not too frequent - a friend of mine gives almost every girl he meets some inane compliment, the first few might blush but after a while he just becomes known as slightly pervy/desperate.
And bawdy "compliments" are totally different - I'm sure some middle aged ladies don't mind builders wolf whistling etc. to convince them they've still got it, but my gf gets really quite stressed and intimidated by guys making loud and leery comments, especially if she's walking home on her own.
