The Life and Opinions of Tristram Shandy, Gentleman Book 3, Chapter 15 Summary
****** was supposed to be "forceps," accompanied by Dr. Slop pulling them with a flourish out of his bag. Unfortunately Dr. Slop fumbled when he pulled them out and he pulled out the squirt along with the forceps.
Uncle Toby is horrified—is that how children come into the world? (Ha. A squirt.)