"No me toques las palmas que me conozco" = Don't clap to me that I know myself*

Extremely used expression and linked to the usual association established between Spaniards and "fiesta" It is used to warn a person not to start the fun/party or you will join in a second as you are in the mood for party!. So we could say that"I am warning you" is the best translation, bearing in mind we are not threatening anyone, really...

"Ay madre, que si quiero salir esta noche! ¡No me toques las palmas que me conozco! ¡Lucía, no me toques las palmas que me conozco!