sŏn = teach
jor-rá-kây = a crocodile
wâai náam = swim
Literal MeaningTeaching a crocodile to swim
English ProverbTeach grandmother to suck eggs.
What can be a more ridiculous waste of time than trying to teach someone something that they are proficient in already, especially if they have more expertise than we do. The crocodile is a truly expert swimmer – he has to be to live! He is much better at it than people and so a person attempting to teach a crocodile to swim, is not only very dangerous, but a total waste of time. This saying therefore means to try to teach someone something at which they are already an expert.
táng táng têe rúu yùu wâa kăo mee pûu yĭng yúh dtàe kăo yang jà maa tăam pŏm rêuang jèep săao pŏm mâi yàak sŏn jor-rá-kây wâai nám
Somsri is teaching Somchai who is the national swimming team to preform the butterfly stroke. She is teaching her grandmother to suck eggs.