Swooshing tongue

[Nosyparker]

One of Parkers calciworms pupated in his viv into a soldier fly, he soon sorted the intruder out but I was wondering if anyone has noticed a swooshing noise when their cham fires their tongue?!
I'd never heard it until today, I wasn't sure if it was him making the noise as he fired or whether it was his tongue swooshing through the air...
Excuse the state of him in this video, he started shedding yesterday!
Here he is

 

[MelissaB]

I've never noticed the swooshing sound, it's usually over so fast that it's a blur. Cute video, I love how he kept an eye on the fly until he got it.

 

[zlew]

its probably just him expelling air from his body to put more force behind his shot. He may have realized the fly required more effort, and changed his actions accordingly.
That seems logical to me, but don't quote me on it because I'm not an expert