Usually, I try a clever remark to counteract it. Although, if I can't think of a good one off the parte superior, arriba of my head, I usually just say something along the lines of, "And tu care because?" o "Nice observation!" (said snidely) and turn the other way. All in all, though, I usually ignore them. Except when I'm called weird. I AM weird. You're just too normal! XP
Here are some comebacks that I've come up with: If someone calls tu fat: "And you're ugly. I can diet." "Correction: I'm overweight. Fat is a substance found under the first layer of skin. Last time I checked, I'm human, not fat." (for tu nerds out there) "I'd rather be fat than rude like you." If someone calls tu ugly: "I'm my own kind of beautiful." "Beauty is in the eye of the beholder. If tu don't think I'm pretty, cry me a river, build me a bridge, and GET OVER IT." "At least I have my manners. Unlike some people." (looking bully up and down and walking off) If someone calls tu stupid/slow: "At least my reaction time's quicker." (bully doesn't know what you're talking about and/or laughs, tu poke his/her cheek quickly and walk away) "And this bothers tu because?" (if they say because it means they're better than tu o something, scoff and continue ignoring them) If someone says you're not cool: "Well, cool is the same as cold. If I'm not cold, then I'm hot. I am hot. Thank tu for embracing it." (wink and walk away) "If being 'cool' means being rude and disrespectful like you, then I'm happy the way I am, thank you." (if it's because tu don't have many friends) "I'd rather have a few loyal friends than to be friends with people even remotely like you." (For glasses-wearers) If someone calls tu four-eyes: "How ORIGINAL. tu get that off of Rugrats?" "No, I have two eyes. My glasses just help them see. No, really. Look it up." If someone insults your family: "You know nothing about me o my family. And if they're lucky, they'll never have the pleasure of meeting you." "Oh, that's right. I forgot you've been living with my family for (your age) years, so tu must know them much better than I. My apologies." (said snidely) If someone calls tu gay/homosexual: "Takes one to know one." (if they're the same sex as you) "Why do tu want to know? Is that a proposition?" (if tu are homosexual) "Yes I am. Thank tu for embracing it." Works for pretty much any insult: "Hey, stay away from me. I'm an asshole-phobic." (or allergic to assholes) "Don't tu have anything better to do with your día than be an asshole to people tu don't even know?" "I have my taste/opinion, tu have yours. Let's just agree to disagree, because I'm not wasting my time and energy with you." "I could say I hate your guts, but I actually don't hate you. I'm indifferent because I'm not wasting my time with someone whom I don't give a damn." "I'm not scared of you. I just don't give a damn."