Sorry Andrea I couldn't concentrate on reading any of that on account of being so dazzled by your ass.
Honestly though, Phil nailed it, there is unavoidably a certain class of fuckwit that if you do want to respond you can only beat them by dropping to their level. The other thing you could try is to talk back to these dipshits in a Fran Drescher voice or something similarly nasal and aurally hideous. "Oh, aren't you just a sweetie-pie with all of your compliments, is that Shakespeare you're quoting?" or, "Thank you honey, you look great too, your mommy obviously paid extra special attention when she dressed her special boy this morning." You can't say them with snark though, you have to sell the character as if you're utterly sincere. But with vocal chords that could be used to hail ships in the fog. They think they're the dominant person in the interaction and that's where the buzz is for them, so reverse it on them by talking to them as if you really see them as a child.