for a female or post-optranssexual to harbor a pocket of air in the vaginal canal and release said air while simultaneously sneezing. the force of opposing pressures may cause all said air to expel.
Susans allergies were flaring up whilst switching from doggy to missionary causing her to squeef.
When a male farts sitting down. The air then escapes through the front and ripples across his sac, thus creating a sound similar to a fart w a sac twist on it.
Man, did you you hear that... Billyjust squeefed in his seat and I’m pretty sure blew a hole in his zipper.