abbr. of sonofabitch n.
|‘My Black and White Dog’ [lyrics, spoken] He didn’t say a word, and as soon as I opened the door the sonofa jumped at me you know.|
|Dict. of Invective (1991) 366: The large number of euphemisms that were devised for it (such as S.O.B., from ca. 1850, so-and-so, sonofa, son of a b., son of a sea cook, son of a gun).|