Here's how you can try to create a "pfft" sound:
* With your lips:
* Purse your lips slightly, like you're about to whistle.
* Blow a quick, small puff of air out of your mouth.
* The smaller and faster the puff, the more "pfft" like the sound will be.
* With your tongue:
* Place the tip of your tongue against the roof of your mouth, just behind your front teeth.
* Release your tongue quickly, letting a small burst of air escape.
Remember, there's no one right way to make a "pfft" sound. It's all about experimenting and finding what works best for you!