We all have a certain propensity for obnoxiousness now and then -- it's just human nature. What's not human nature is an app called "Fart Contest."
Pique your interest? There's also an app specifically made to make the loud, obnoxious droning sound of a vuvuzela, the instrument popularized by the 2010 FIFA World Cup in South Africa. Or the dozens of apps that involve virtual drums.
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In part-celebration and part-warning, we've gathered 11 apps for that special obnoxious someone in your life. Or for you to annoy that special obnoxious someone in your life.
Know of any other loud, annoying or flat-out infuriating apps? Tell us about them in the comments.