Yup, yup~ A lot of times. :D
It often works with my friends, but only once with my 'nee-chan. I threatened her that I'd spill water on her precious mangas. She belived me at that time 'cause I tripped on a slipper and spilled my coke on my shorts. X33;
Most of the time, though, I'm the one being threatened. "If you don't stop playing, I'll eat all your candies." ;~; Y'know, stuff like that. <3 XD;