Boy, you've really done it this time. If you're searched up this term that means the old man's pissed and he ought to give you a good slugging. "Why I Ought To" is used in the darkest of times, and is usually a last-resort in situations like this. So, next time you hear this, alert the authorities or flee the scene at once, for your very life may hang in the balance.
*Boy spills milk all overthe table*
Father: Ah! You've gone and done it this time, Mister! Why I Ought To . . .!
The current decade, between the years 2000 and 2010. In English, (most often British English), "ought" can mean "zero", thus the "oughties". This is used in lieu of zero, because "zeroties" sounds awkward. Unlike with the "eighties", the "nineties" and so on, there is no one name for the current decade enjoying wide usage.