A bzurp is the sound made when your press the lower half of your face into a part of someone's belly, ass cheeks, arm or any other body part with large surface mass.
Also called a "raspberry".
The quality of the act of performing a bzurp is rated by the level of "bzurpage". The level of the volume made during the act, along with the duration are the benchmarks used to identify quality bzurpage.
That girl has mad bzurpage. I bzurped her so good, it sounded like an Oprah Winfrey chili dog fart!