to shit and barf at the same time, a common symptom of the flu; a more crass version of shomit
. A shart
will sometimes preclude a sharf, so pray that a toilet is nearby.
"Homey, I have to lay off the Mexican food, especially the tequila shots. I spent all morning on the toilet sharfing my brains out!"
"Dude, you're a sharf monkey!"
"C'mon, don't make me laugh or I'll sharf all over you!"