To “crack someone” is slang, and the meaning depends on context, but it usually falls into a few main buckets.

Core meanings

  • Make someone laugh or lose composure
    In many casual or online contexts, “cracking someone” means you made them laugh hard or broke their serious mood, similar to “cracking someone up.”

Example: “That joke really cracked him.”

  • Tease or roast someone (playfully or harshly)
    In modern internet and chat slang, “cracking someone” often means joking about or roasting them, usually in a playful way among friends, but it can cross into mean or bullying territory if it gets personal.
  • Make someone “break” emotionally or under pressure
    In a more serious sense, “to crack someone” can mean to wear them down so they finally give in, confess, or show emotions they were holding back, like “the suspect finally cracked under questioning.”
  • Hit/strike someone
    More literally, it can mean to hit someone with force, as in “He cracked him on the jaw,” which is about physical violence, not joking around.

Less common or context-specific meanings

  • Sexual context (very informal)
    In some online or slangy conversations, “to crack someone” can be used as a crude way of saying to have sex with someone, similar to “smash” or “hit that.” This usage is very context-dependent, not universal, and can be disrespectful.
  • Someone “cracking” themselves
    Phrases like “he cracked” or “she cracked” can also mean they had a breakdown, snapped, or mentally/emotionally couldn’t handle the pressure anymore.

How to figure out what it means in a sentence

Look at:

  • The tone: jokey, flirty, angry, violent, serious.
  • The setting: group chat, meme comments, a serious story, a crime drama, etc.
  • The verb around it: “cracked him up” (humor), “cracked him on the jaw” (violence), “finally cracked” (pressure).

If you share the exact sentence or situation you saw “crack someone” in, it’s possible to narrow down which of these meanings applies most. Information gathered from public forums or data available on the internet and portrayed here.