My birthday is still ten days away and I got another excellent present: a Pig Popper! from bink, like the one Mr. Spock gave Captain Kirk (in my story of the Search for Spock's Present).
It makes a most satisfying air thwock noise, so I recorded it.
Hm. Its peasing plosive sounds more like a hard thwack there. Oh well.
In case the video doesn't play on your device, here's a photo: