A hard, heavy hit that really hurts. In Mexico it can also mean a brutal cold or flu that knocks you out — 'me dio un trancazo' means I got hit hard by sickness.

To insult someone in the worst possible way by bringing their mother into it in Mexico. It's the nuclear option of Mexican insults — once you go there, there's no coming back.

To be extremely tired physically, exhausted to the point where you can't move a single muscle. When you're molido, your body is completely done after a day of intense work or brutal exercise.

The police or a cop, said in a derogatory way or as a code word among friends to warn that the law is coming. In Mexico, saying 'ahí viene la tira' is the alarm signal for everyone to straighten up or run.