Is a guy hinting that he likes you or something when he asks you what would you do if a guy gave you a thong?

He is hinting at only one thing and that is sex. He only thinks he can have sex and this is his way of asking for it. It is rude and crude and shows a lack of respect for you. Next time he does this look at him and say "How rude" and walk away. Girl, you deserve more respect.