The slang term "knuckle sandwich" refers to a punch or hit with a closed fist. It is usually used in a confrontational or aggressive context, and often implies that violence is a possible outcome.
For example, if someone says "If he keeps talking to me like that, I'm going to give him a knuckle sandwich," they mean that if the person continues to speak disrespectfully, they will physically strike them.
While the term is sometimes used jokingly or in a lighthearted manner among friends, it generally has negative connotations and should be used with caution to avoid offending or upsetting others.
• If that guy doesn't stop harassing me, I'm going to have to give him a knuckle sandwich
• My little brother is always teasing me, but he knows not to push me too far or he'll get a knuckle sandwich.
• I wouldn't mess with that bouncer if I were you - he looks like he could serve up a mean knuckle sandwich.
• The coach was furious when he saw his star player throw a punch during the game. 'We don't solve problems with knuckle sandwiches on this team!' he yelled.
• I can't believe you got into a fistfight at the bar last night. Did you really have to give that guy a knuckle sandwich?
• My grandpa likes to tell stories about the old days, when settling a dispute meant meeting in the street for a knuckle sandwich.