MY NAME IS MAYO GAME
This achievement is accumulative so as soon as you reach 5,000 hits on the basic Mayo Jar (the one that you start with), you may want to start applying different skins to your Mayo Jar by pressing Y and choosing the skins (click on the skin and continue) in order to get skin-related achievements too and not click on the Jar more than 10K times, cause it’s kinda exhausting and boring.
There's only one achievement for each skin, so as soon as the achievement related to it pops up, go ahead and apply your next skin.
Thus, by the time you get all the skins-related achievements you will reach 10,000 hits in total and get this achievement!