An exclamation and insult rolled into
one.
When used as an exclamation, it's similar in meaning to 'Son of a
Bitch'
When used as an insult, it implies that you are the offspring of ten year olds
fucking.
Spoken very fast, shortening of 'Son of a Small Children'.
Exclamation-Sonnuvasmallchildren, dude! Those
tits are HUGE.
Insult- You're a real cocksucking monkey
fucking sonnuvasmallchildren, you know that?