The act of farting immediately followed by unwillingly protruding fecal matter (solid/liquid) causing quite the disturbance in your undergarments while displaying an extremely awkward facial expression.
Young skeet, "Yo dawg what is that smell? And what is that
look on yo face?"
Young poopy, "Aint nothin dawg jus plain ol' shart."
When you try to fart, but a bit of shit comes out instead - a "wet fart" (shart = shit + fart). Usually unexpected and always embarrassing, a shart can also create an uncomfortable "wet" sensation where it's least desired.
After sharting my pants, I walked to the bathroom and changed my boxers, trying to keep the impression that nothing had happened.