Killing two turds with one kidney stone

Exactly the same definition as "killing two birds with one stone", but this term can be used as a more vulgar/edgy next level substitute to get the same point across, but also cause a sense of shock and awe also possible disgust towards first-time listeners of this phrase. This phrase may also invoke the mental image of a man grabbing his own penis and tilting it upward like a firearm and shooting out a kidney stone with such intense force that it could lethally penetrate two flying turds with bird wings killing them both at the same time.

Killing two turds with one kidney stone: See definition for "Killing two birds with one stone".