No, seriously?
I ask you whether it's something good or bad, and you just go all 'I'll tell you later'.
Well, now I'm almost positively sure whatever it is is something bad, so I swear, if it isn't,
you owe me a night full of sleep.
Really, saying that my sister needs to tell me something, but not giving me the slightest hint about it although you seem to know... do you have any idea what it's like when she's angry? Dude, I'd take my parents' rage over my sister's mild annoyance any day, because she knows exactly how to guilt-trip me.
Please, I'd rather have you warn me in advance, since you obviously could.
She will end me, right?