“3. Enclose parenthetic expressions between commas.”

“This rule is difficult to apply; it is frequently hard to decide whether a single word, such as however, or a brief phrase, is or is not parenthetic. If the interruption to the flow of the sentence is but slight, the writer may safely omit the commas. But whether the interruption be slight or considerable, he must never omit one comma and leave the other. Such punctuation as”

“Commas: commas for everyone!”

“METAPHOR: A tightly fitting suit of metal, generally tin, which entirely encloses the wearer, both impeding free movement and preventing emotional expression and/or social contact.”

“There are people who embrace the Oxford comma and those who don't, and I'll just say this: never get between these people when drink has been taken.”

“I comma square bracket recruit's name square bracket comma do solemnly swear by square bracket recruit's deity of choice square bracket to uphold the Laws and Ordinances of the City of Ankh-Morpork comma serve the public truƒt comma and defend the ƒubjects of his ƒtroke her bracket delete whichever is inappropriate bracket Majeƒty bracket name of reigning monarch bracket without fear comma favour comma or thought of perƒonal ƒafety semi-colon to purƒue evildoers and protect the innocent comma comma laying down my life if neceƒsary in the cauƒe of said duty comma so help me bracket aforeƒaid deity bracket full stop Gods Save the King stroke Queen bracket delete whichever is inappropriate bracket full stop.”