! .... not sure what to think about this! ...

[reptile3]

different animal but, our leopard gecko does it when its annoyed, like if its comfortable and we pick her up haha

I haven't heard any noises like that from my snakes, but my geckos make that same noise, it's when they want to be left alone(they are annoyed/uncomfortable)

[Snake lover 3-25]

hey is she still doing this? i just noticed that meadow seems to do it alot more just after i take her out of the tub? maybe it's just wetness in her mouth that is creating bubbles? and the bubbles pop creating the sound?

[Zephyr]

I think it's just the snake letting out air. Like a sigh. The rapid exhalation through the esophagus, especially if there's a little bit of saliva there, would explain the "tick" noise. My plated lizards make the same noise after baths. Close to what Shanley says.