Ne hakkında kıs kıs gülüyorsun?
 - What are you snickering about?
Öğrenciler kıs kıs güldü.
 - The students snickered.
Here the unfeeling Toad broke into a snigger, and then pulled himself together and tried to look particularly solemn.
presently the Mole's spirits revived again, and he was even able to give some straight back-talk to a couple of moorhens who were sniggering to each other about his bedraggled appearance.