What does “megcsal” mean in Hungarian?

Megcsal means to cheat on a romantic partner — to be unfaithful. It’s built from csal, the general verb “to cheat, deceive, defraud”, plus the perfective prefix meg-. While csal on its own covers cheating at cards or on a test, the prefixed megcsal has settled into the specific sense of betraying a partner: megcsalja a barátját is “she cheats on her boyfriend”. Same root, but the lexicalised form carries a very different sting.

Useful relatives: csalás (cheating, fraud), csaló (a cheat, fraudster), megcsalás (infidelity), hűtlen (unfaithful). The grammar is transitive — you megcsal someone — so megcsal engem is “cheats on me”. In the clip a creator riffs sarcastically on the over-asked clickbait question “miért csal meg a barátod?” — why does your partner cheat on you — while doing her makeup, mocking the genre rather than answering it.