Graceful comebacks for these sensitive subjects.

Every holiday gathering has a grinch. You know their M.O.: They take a certain tone of voice. Dish out a thinly veiled criticism. Pose a nosy question. If there's one thing you can count on for Christmas, it's that moment when a seasonal saboteur--and every family has at least one--broaches a topic that rubs you the wrong way.

Sad but true, people who share your history tend to know your vulnerabilities--which means they also have the emotional intel needed to trigger them. At the same time, if you want to avoid feeling like a wet stocking is snuffing out your holiday spirit, it's important to recognize that sometimes harm was intended (consciously or not).

So what can you do if the touchy topics come up (and let's face it--they will)? Try these tips from human behavior and etiquette experts to come through with grace and humor.

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Your love life...

They say: "Have you ever tried online dating?"

You hear: "Wow. You're still single?"

How to handle it: If you get this question every holiday, then make like a girl scout and be prepared, for heaven's sake. Jodi R. R. Smith, president of Mannersmith, an etiquette consulting firm, calls this preemptive etiquette. "If you're single, it's 'Are you dating someone,' and if you're dating, it's 'When are you getting married,' and then, 'When are you having children?'" says Smith. Have a response ready for the predictable questions.

And when it comes to those responses, Wendy Walsh, PhD, a relationships and human behavior expert, advises you go with humor. Say something like: "Online?! I get hit on every time I walk down the street! It's exhausting, really." Another option? "Nope, the full-page newspaper ad is working just fine,' " adds Michelle Skeen, PsyD, author of The Critical Partner.

Your priorities...

They say: "When was the last time you were home?"

You hear: "You don't come home nearly enough."

How to handle it: "When faced with a guilt tripper, keep your answer simple, and positive," advises Skeen. "The more details you go into defending yourself, the more the person knows they've gotten under your skin." Just say: "Not as often as I'd like." No one can argue with that response--which is exactly the point. "The idea is to deflect the snarky remark rather than escalate a negative encounter," Skeen adds.

Your weight...

They say: "Do you want a whole leftover turkey sandwich, or a half?"

You hear: "You've gotten fat."

How to handle it: "We don't always know how a person intended a question," says Walsh. "A lot can be about what's going on inside you." In other words, be careful not to jump to conclusions and project any food guilt you might be feeling. Instead, deal concretely with exactly what you hear, Walsh advises. Try, "Your turkey is so delicious, I would love a whole." If the words were innocent, you're not guilty of starting a war. If you were under attack? Well, look at you, rising above it. "If you're happy with yourself, you'll drive the critics nuts," she says.

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Your kids...

They say: "Your kids are so...energetic."

You hear: "Your kids are completely out of control."

How to handle it: Here's how to get the Family Judge off your case for good. "With each comment, acknowledge the remark, deflect it--and give this critic an assignment," says Smith. For example, try: "Yes, they're so happy and energetic--I'm actually basting the turkey at the moment, so it would be fabulous if you'd take them outside for about 20 minutes." You'll soon condition her to stop her snippy comments because she doesn't want to help, says Smith.

Your cooking...

They say: "What's in this?"

You hear: "I hate your cooking."

How to handle it: "If the tone tells you this is a bullying comment, then I suggest going into Faux Emergency Mode," says Smith. "Say, 'Oh my god, do you have an allergy--what are you allergic to?!' If they say, 'No, I don't have allergies,' say, 'Oh, good,' and move on to another topic." If the question came from a genuine health concern, then you've responded appropriately; and if it was meant to hurt you, then it's pretty clear who won that battle.