ok...
there is a blonde, a brunette, and a natalie that go to a haunted house...
they get to a really big staircase...
there are 100 steps...
a ghost appears, and says it will tell one joke at every step and if a girl laughs, they die...
on the 15th step, the brunette laughs, she dies...
on the 50th step, the blonde laughs, she dies...
on the 99th step, before the ghost tells the joke, the natalie laughs...
the ghost asks why she laughed before he told the joke...
she says "i just got the first joke"...
lol...