The act of relieving ones-self by urinating, deficaing and regurgitating into the same toilet bowl.
Most commonly practiced in toilets that dont belong to you,(it gets rough). Ex: at an open house, in a resturaunt, churches, hospitals, gas stations ect...

Variations: UpperDecker GurtSquirt, DoubleDeckerGurtSquirt (some up top, some down below. this takes some practice) Sink GurtSqurit, Porch GurtSquirt. SheSquirt(ladies) G-Squirt (for short)