loek doet zijn linkerhand in zijn rechtermouw en doet hetzelfde met de andere hand en slaat daarmee op de tafe

"Loek puts his left hand into his right sleeve and does the same with the other hand, hitting the table with them." Translation: "Loek is inserting his left hand into his right sleeve, and then repeating the action with his other hand, ending up striking the table with his cloaked hands."