Shevuot 22: Talking and Eating and Talking about Eating

A discussion about speech and eating. Which includes defining when one's speech incurs a requirement to bring an offering -- like the blasphemer? A nazir? Plus, "konamot." And oaths about eating that do not specify the details or amounts of prohibition... the Gemara specifies the inferred amounts, when nothing is stated. What about non-food? Does dirt count as eating? What about grapeseed, which isn't eaten outside of a mixture? How do you define that amount for eating? (Or how much dirt counts as eating). Also, a new mishnah! About one who swears about not eating - and then eats and drinks - is that a liability for 2 offerings, or only one? With other comparable cases.