I have been corresponding to a man through Match.
You don't have to politely respond.
Either this guy is dumber than a stump and thinks he's flattering you, or hes' thinking with this pants!
I like something simple and un-arguable like "Thanks for your interest, but I don't think we're a match."
"You're nice and thick"?????? Was that supposed to be a compliment? Sheesh.
I too would be creeped out by too many physical references, I don't blame you.
Men are visual creatures. Nothing to do with online dating. Unless you are looking for platonic friends only or plan to date women, looks do matter. You have nothing to lose by meeting him for coffee. You can arrange for an escape by saying it's your cousin's birthday later that evening when you set up a time with him. Then if the date goes well, you can tell him "I told her I had a date and might not make it."
For all you know, he posted old photos of himself and he may be no prize package, so why don't you just meet him and find out?